Does Flushing work? Is Flushing plants a myth?
HTML-код
- Опубликовано: 3 окт 2024
- www.rxgreentec...
www.rxgreentec...
An interview with scientists from RXGreen Technologies to discuss their recent flushing experiment to find out if flushing cannabis plants really works.
Shop MIGRO ARAY (global shipping): migrolight.com...
Our Amazon US store (Free US shipping): www.amazon.com...
Bulk orders: Contact us at info@migrolight.com for a quotation
Follow us:
Instagram: / migrolight
Facebook: / migrolight
TikTok: / migrolight
Join the MIGRO community on our Discord server and share knowledge and growing experience with each other. We have grow diaries, Q&A, growers help topics, giveaways, monthly prizes and more.
Join our server here: / discord
Hi, Shane here. Thanks for watching, Please hit the like button and subscribe here: www.youtube.com/@MIGROLIGHT?sub_confirmation=1
Buy my Grow Lights here: migrolight.com/
Follow us on:
Instagram:instagram.com/migrolight/
Facebook: facebook.com/MIGROLIGHT/
TikTok: www.tiktok.com/@migrolight
You do awesome work for us Shane, you’re definitely appreciated
I am a 73 year-old lifelong gardener, new to growing cannabis. I've learned that in the gardening world there is an abundance of practices and beliefs that simply are not worth one's efforts. Fortunately, with a little effort, a gardener is able to access many science-based sources of information . My research, combined with my own informal field trials, have led me to the conclusion that successful home vegetable gardening is quite simple: basically, no-dig and the addition of compost to my gardens at the end of each growing season. Over the years, I believe this approach has saved me considerable effort, time and money.
While doing my research on how to grow, harvest and process cannabis, I realized that there is a dearth of science-based information. This is probably due to the fact that growing cannabis has been illegal and thus the availability of the plant is too limited to make extensive research viable. Things are changing and this is a good thing.
I'm looking forward to seeing more of these types of evidence-based testing. Thanks for posting.
Their techniques are horrible
@@justicebruno5249 Why do you say that? I'm interested in informed opinions. Cheers.
@@justicebruno5249 lol, what? what technique do you need to run some water through the grow medium. your critique makes no sense.
@@professor4202 man...lol you are so right... lmfao... I was watching a different video and I guess I finger fucked my phone and posted it here...killer. yeah hard to fuck up a flush. Thanks for letting me know..damn phone
@Spectacular Spectacular Thanks for the comment. This is the first time I've heard that terpene production is negatively affected by the use of non-organic fertilizers. Interesting. I googled the topic but can't seem to find any information on that topic. I'm wondering how you reached that conclusion? Cheers.
On my first attempt at growing I did not know of flushing as I was new. To this day, it is still the best batch I've done to date. I yielded 116 grams per plant. The smoke was smooth and flavor profile was incredible.
@@stopblaminggunsblamethedem4964 it says right there that did not flushed but hey your username kinda matches the question lmao
@@freezeframepleaseyour spelling says lots about you too , freezeframe
Arguing in a chat? Says a lot 😅😮
This is amazing brother I have dreamed of these conversations thank you from someone who has had to hide for half my life.
same here brother.. remember society is wrong about this not you.
These people saying it's all in the cure are out to lunch ... I grew my own I didn't use anything unnatural. Even the kief burnt black ... You can't tell me that is from wetness or something.. people are out to lunch ... Makes me sick this guy, the ego how full of yourself are you ?.. you can tell he really enjoys going oh debunked you guys. What causes the ash to burn white ... If you are going to say that's all cure that is bullcrap... Like if you are going to smoke some kief and it burns black do you really think that is moisture like Holly cow ... These people don't know what they are talking about ..
try growing your own and smoke it ... Grow it outside in the ground.... Don't use store bought fertilizers I'm sure growing in a tent and using those fertilizers is helping you somehow to flush it or something ... How much experience do you think these people have ... And they think they are smarter than everyone.
@@paddymills hell yeah agreed!!
@@paddymills wow u really got upset …this is science bro . Real proven data . I don’t flush and the ash is white sometimes and sometimes it isn’t . As far as taste I can’t really tell the difference . This is a highly debated subject that people want answers to so they did their best , I highly doubt that he did this to look good or be better than anyone else or is full of himself , if you have watched any other videos of his he just does tests and shows his results .. sorry if u don’t like it . . Do what you do .., why be upset about someone putting this out there ?
@@Carpenters_Canvas the darker the ash the higher the resin in the bud. Lesser the resin, whiter the ash
More discussions like this please. Excellent°°!!!
The best channel on RUclips by far.... thank you shane!
13:42 the juicy part your waiting for
ty bro
Thanks bro
Remember these are just scientists they are not life time gardeners they dont fully understand what's happening in microbiology (yet). just a few years ago it was only NPK
@@Boxbeat666 NPK?
What do you recommend? Flushing? I’m first time at this only within 14 days of harvest
@@DrMidas02 flush for a week when u see you triclones start to turn a little amber . It will save you nutrients and you can smoke it as soon as it drys. If not you will have to leave it a fews weeks in the jars for the bad harsh taste to go away. Remember its always best to let your plants go a little more than what's stated on the seed package 9/10 weeks. Smaller plans may finish quicker than larger ones.
One thing for sure about growing cannabis and that is nothing is for sure , at 67 I started to experiment with smoking and growing in 1967 and in 1975 started growing with a 400 watt metal halide warehouse light ! My favorite thing to do , and still is , going to auto wreckers and abandoned cars around old farms and looking in vans , obvious teenagers cars and I've found many old seeds some that geminated after 20 years of being under seats ! Most grower's are like hunter's or equipment operators , they always thing they are the best at it , like I've said before I've been eating for 67 years but I'm far from a chef and I learn from newbies all the time ! Experience is still the best teacher .......great channel !
touche
Ii8pjp lol (ppp program lol poop
Nothing but respect for youand your approach to growing mate. I'm 49 and have been growing weed for a while now and I am still learning something new every crop. I pity anyone who doesn't know enough too know they know nothing. 😂
Ur right man, I've grown straight monsters and then like now I had one that wouldn't veg at all, idk what it did. But turned back and it's made a lil flower on it. Hopefully it's goin to be a good one, something stressed it bad at gemination, but 3 more of the same seeds right beside in same dirt have flourished. Idk. Wierd plant but love em. I'll listen to anyone for advice. Even if I know it's wrong or I know is right, I just like hearing opinions or stories, while we cheef down on said plants lol. ✌️
I started at 45 after retiring from boatbuilder since 15. I knew then plants grew from soil just add water. I now know I knew nothing. Now,10 years later,I know the cure for most afflictions.
My plants thrive and boom instead of fizzle and pop. Everyday I still learn new things.
Given that their particular experiment showed no discernable difference in weight, flavour or thc levels between a 0 day flush and a 14 day flush I would be most interested to see how far that can be pushed. Would we see a difference at 18 days? 21 days? 25 days? It seems that the most interesting question out of this is how much nutrient are we wasting?
At 21 or 25 days the plant is dead.
@@gradeagrasshole3192 shouldn’t the plant start to die, self consuming & more natural? Pulling nutrients from the plant, rather than growing medium
@@5h1tfuk I mean it will be completely dead. Not transitioning or pulling nutrients, but dead. It wont get any deader, but it also wont get any flushier
@@gradeagrasshole3192 lmao I love this comment for some reason
You’re an indiot
All these findings lead me too believe that it doesn’t matter if your clean water feed at the end or not . The one thing I wish they talked about was chlorophyll content % for the final product of each trial .... hugely overlooked and direct impact of how a joint burns . Black vs white ash . Not nutrients ... chlorophyll.
I wish they found out if flushing for 7 days aided in breaking down chlorophyll on top of a 14 day hang dry , tote cure
They did do the taste test which included the question about the ash from the 65 participants that did the test ,,,sorry I was reading your comment and listening to her talk at the same time ,,,just saying ,,🤘💪✌️
chlorophyll is made by nitrogen and magnesium
Ive always believed in flushing, but lately, have been going down the scientific rabbit hole of not doing it. Another thing I listened to was saying that, by flushing, you’re, essentially, weakening the plants immune system for the dry/cure process, making it more susceptible to mold. It’s the proper cure that breaks down the chlorophyll.
Just as healthy clones are necessary for healthy veg, to flower, to harvest, to dry/cure
I am 77 years old and became familiar with cannabis 50 years ago. What I have found in Practical experience is a difference between a flushed plant and a not flush plant is the non-flush plant when smoked in a joint will have visible Sparks and the occasional audible crack. The plants that have been flushed 7 days do not have the Sparks and the cracks. I don't know why. Cannabis needs much more study it has qualities that are still uncovered. Absolutely curing cancers is one of them.
Excess Nitrogen creates sparks
I'd love for a study to be done on topping and stress training, and the perception of higher yields.
Now that will be great to have studies on these subjects.
@DoWhutNow no it doesnt. The evidence is like for flushing.
@Ivan Catudan depends on strains as well. Some respond better than others. But, fundamentally I agree with you. Any changes typically that I've seen have been minimal. But, I'm only 5 years in...
stress training definitely works
@@nihilityjoey what part of flushing isn't legit to you?
As a test was done a few years back. Limited completely to a couple strains and environmental settings.
Taste was changed and the fact that no nutrition is needed for the last two weeks is legit. As far as the stress included in the process filled by darkness is a slight improvement. Almost no need to do it. But again they only used two or three strains. And the same environment.
Hardly a deep dive into it though. From the 2017 study.
Migro and Mr grow it talked to the people who did the study last year. You can find their input there as well as there site if you can remember the name if the company that sponsored the testing done.
Again, Shane lifts the lid on folklore and myth. My favourite is blasting the idea of Grams/Watt as a metric for grow light efficiency. Not very long ago that was “da’ bomb”. Now everyone is up to PAR and PPFD. Introducing scientific method always improves results. Thanks to the great science from Rx Green.
You mean Gram per watt which is an aim not a measurement! and par ppf ppfd is a measurement thats been around for decades ! We didn't suddenly lern this when migro turned up with their overpriced lights.
Grow some hair old man
Yet most weed is still terrible lol
missing data on Chlorophyl levels before and after “flushing”.
Chlorophyl is a huge contributor to taste and flavours as well as harshness.
Chlorophyl will decay in the dry/curing stage anyways.
IsExtinct this is true but if you get more of it out before hand, there is even less to decay.
i read the entire research on their webpage and the 14 day flush had their leaves completely yellow compared to the 0 day that still had full green leaves. this was the only data that seemed to widely vary between all cases unlike as stated in the video that there wasn’t enough difference between the groups to warrant any significant change.
i feel there is something they are over looking here. it’s not pertaining to NPK so i understand why it wasn’t covered in the study.
Do you think chlorophyll content could affect the colour/hardness of the ash?
@@BC-nl9ph It does not.
There’s a lot of flaws n your methods
The cure wasnt talked about at all that's where the magic happens that's where taste and flavour comes in .
Experience is the key.
curing and flushing does the exact same thing,flushing just quickens the procces
The best tasting cannabis product I have had is live resin. It is not cured at all soon as the plant is cut straight into the freezer then made into bubble hash finally made into rosin that they call live resin. This is the best taste ever!
Perhaps more interestingly... Can the flush effect the colour/hardness of the Ash?
@@kuittiukko NO NO NO NO NO
This is some groundbreaking stuff. Happy I can stop wasting the last two weeks worth of nutrients and get the same crop.
Thank you Mr.Shane..!!!
You are providing an awesome service and the info. regarding “flushing” was long overdue.
Kudos to you fine sir…!!!
Thank you! I work in the medical Cannabis industry and have yet to meet a plant scientist or anyone but myself who even studied it in College. Lots of "facts" they were passed down, miss information, half truths and people stuck in their ways cuz this is how there mom who grew did it and she has dreads etc..
I remember this study first being published about 6 months ago, maybe more, then it completely disappeared from the company's website after some questions about finding no significant differences between treatments, but still recommending a 0 day flush based on consumer preferences in the blind taste test. If an operation runs 8 an week flower schedule and can achieve statistically identical results by using only 6 weeks worth of feeding, that's a 25% reduction in inputs for the producer. On the other hand, recommending a 0 day flush treatment ensures that producers are not buying 25% fewer inputs from a fertilizer manufacturer. I guess my curiosity is why go through the effort of conducting a study worthy of being peer reviewed and published, then conclude with a statement from qualitative data when all other statements have said there is no significant difference?
It was only a one medium test- the sample and methods were inconclusive, not just the results provided.... I know from experience- salt build up in a media will have your smoke tasting like crap and that’s if it’s even burnable...
@@TheAmericanOne crazy thing is i use tap water with 120ppm and she's smooth with no flush in soil.
@Philip J Fry I'm leaning to your method to try. Thanks for the input.
That was the finding of this study, no significant difference at the 0.05 level of certainty. That’s how the study was designed. The results are the results. No conspiracy.
@@eugeniahobbs41 I'm not a fan of conspiracy theories either, I've just had previous personal experience with this study. The dead link and my comments from this past December can be found in the link below. forum.growersnetwork.org/t/finally-controlled-study-about-flushing/28376
I enjoyed the scientific end of their research and I found it to be very strong in my opinion that I have of flushing or not flushing as well. And so that being said I have always grew my plants the nature's Way!!! So good soil good organic compost good organic food and nature takes her course and that has always done for me beautifully!!! With no tip burning no fungus no deficiencies no headaches of any sort short!! I'm just old school I guess but I believe in the keep it simple stupid method!! Peace and God bless keep it growing green!!!✌️
I want to learn more about not having to add notes to my outdoor grow they always cause issues!
What I got out of this is if you flush you can save some nutes, save money and it really won't affect your yield.
If it doesnt effect taste and so on...what happends if u feed right to harvest
Maybe that could have been a 2nd control
But waste two weeks of life.. smh 🤦🏽♂️ I rather time than money
@Tin Tizzy MY DRYING WAS A LITTLE QUICK LIKE 5 DAYS...I DIDNT FLUSH..IM CURING NOW BUT HAVE SMOKED THE BUD TO TEST...NO HARSH TASTE/SMELL...WHITE ASH I HARVESTED MILKY WHITE TRYCHES...AND THE HAY SMELL DISAPPEARED AFTER 3 DAYS OF CURING...
@@fullparranrlgames3758 They did . The said they had different control groups that flushed starting different days 0 being no flush.
I always suspected flushing was BS myself, thanks at last for some believable data !
I agree
I've flushed my plants and not flushed them and no one could tell the difference. Dispensaries still bought as much of it as possible and so did my friends. Still tasted great, white Ash and smooth. The plants I have going right now are at week 9 and I have been flushing them for 5 days now, because I did a run off and the soil had 1800ppm, so there are plenty of nuts in the soil for the plant to eat up. In two days I'll do another run off and see where it's at
What was your ppm's of your last feed solution and how long after that feed was that first flush?
right on. you can save on input costs (mainly nutrients) by only watering with regular water the final two weeks. it won't affect your buds or harvest in any way.
Great information! I can say personally I prefer flowers to be faded yellow vs fresh green color! Smoother taste & white ash burn vs a black snap crackle pop smoke! I will continue to let mine fade last couple weeks.
Yessah!🤙gotta flush before harvest.everything these ladies are saying goes against my personal experiences.i do not believe their claim that there is hardly to no taste difference in 14 day flushes compared to a 0 day flush.again this goes directly against mine and others experience.
Ash color is based on sugars in the buds, NOT the nutrients used. Only a good cure will remove the sugars, it has nothing to do with flushing, just another part of the myth
Exactly right
fade doesnt have anything to do with flushing
@@ethdsththwethr7220
Exactly. Cannabis is an annual plant and dies after flowering. If your plant isn't "faded" when chop time comes, it means they're making the typical newbie mistake and likely harvesting too early.
Great interview! I couldn't bring myself to hit the thumbs up since it's sitting at 420. I'll have to come back to it lol
This is the best in depth look at flushing I've been able to find. Seems that 14 day flush is not the way to go, looks like 7 days may be the sweet spot. But that's my take, what's everyone else's opinion?
It depends on what media you grow in !!!
@@TheRasta815 I'm growning in coc coir.
@@derekellisCAN yeah 7-10 days for coco/hydro, 14 for soil, if your unsure do a half and half and see what you prefer.
Awesome clip. More like these please?? Thank you for continuing to do what you do. You absolutely rock!
From my experience I notice a difference. Started the flush 2 weeks before finish and carried on feed in the other plant. The plant not flushed had a harsher taste to the flushed plant, though I wonder if different feeds and chemicals may have different effects, no two setups are ever the same there's always something you can't replicate 100% in either water, temp, humidity so I think it's hard to get a true answer. I always say flush, doesn't effect the finish in my opinion and why not potentially remove something that can cause human harm. Great watch and learn though 👍
Yep same experience for me. I wish I could agree with this & it were true because it would be more convenient for me to not flush. But it just isn't, not with my nutes, they're missing something.
If you use coco coir and you flush then you will remove salts (nutrients) from the plant and simulate the process of summer to autumn. This doesn't mean that your plant is ready or ripe, you are just telling it that it should be. Using living soil you store all the nutrients from the start in the soil and only top feed 1 time every 3-4 weeks, last time 5 weeks prior to chopping and you will see that the depletion of nutrients happens naturally that way. Flushing just imitates the same thing. :)
Wha growing medium do you use?
Same
@@timpage5021 I have tried soil mixed with coco 1/3, I am really interrested in testing out organic dry amendements. Checkout Mr Canucks Grow on youtube, he got some realyl interresting method and idiot proof (almost). Im thinking of combingin this method of growith with the Blumat drip system, have you looked into this?
It seems like the study talks about more chlorophyll breaking down in the flushed leaves at harvest and a decrease of Nitrogen. I know it goes over the schedule, but I wonder what NPK ratio they fed to the plants in flower. I wouldn't think that it would have so much nitrogen compared to potassium even without the flush. edit: I looked it up and it is like 7-2-7.
My understanding is the flush is to do with enzymes . In the wild as the summer progresses the soil heats up and the enzymes are able to break down more of the available nutrients and thus the plant is able to make better use of the soils benefits . As the summer recedes the soils cool down and the rain and a few nutrients are all that is taken on as the enzymes die off . So when we give plants just a water feed for the last few days indoors , we are replicating the end of the plants grow cycle forcing it to use up its stored energy in the leaves .
I know someone whose bud always tastes the way botanicare cal mag smells. He flushes for 7 days. My other friend doesn’t flush, and also uses botanicare cal mag. Other friends bud does not taste like botanicare cal mag’s smell. It’s all about feeding your plants right.
My understanding in recent years is that it wasnt minerals or enhanced terpenes, certainly not cannabinoid levels, but rather the carbohydrate contents in the flowers. By starving it, it forces scenescense and causes the plants to use up its carbs, which then leaves less carbs to break down during curing. They dont even address that theory at all.
I am a firm believer in the flush. I personally have tested it and the bud does taste better hands down. Without a flush it was bitter and harsh every time. A 1 to 2 week flush depending on the substrate has been my method. Even if plant really does not fade it allows plant to process the chemicals used to grow out of its system. Plus stressing the plant promotes the plants defenses to protect the buds. More trichromes in layman terms. Same as 48 hours of darkness prior to harvest. I grow on my channel and my own personal experience is a flush is required. My bud is smooth like a cigarette because of flushing. If I wanted to smoke chemicals I would do meth. Lol this is easy for anyone to personally test. At harvest leave a cola there to flush or pull a cola a week or two prior to flushing. Then dry it all and try it.
this is the type of content we need. evidence base on why we do certain things in a certain way. why
Great mind blowing video, still hard to believe. I’ve been flushing since I started 15 years ago. Only thing I’d like to add is that one of the things that does happen during flushing is that the color of the plant gets less dark overall. Which hypothetically could make your buds more attractive once dried.
why did you start flushing? because someone told you to?
@@professor4202 I am brand new to growing cannabis. I practiced flushing because I couldn't find any evidence-based study that suggested it was a waste of time. Such are the risks of relying on anecdotal information and testimonials. Unfortunately, the cannabis community doesn't have many evidence-based studies available. And I got sucked in!
@@priayief yeah, that happens. i've got some stuff for ya:
www.rxgreentechnologies.com/rxgt_trials/flushing-trial/
atrium.lib.uoguelph.ca/xmlui/bitstream/handle/10214/12125/Stemeroff_Jonathan_201712_Msc_with_erratum.pdf
hightimes.com/grow/new-research-shows-flushing-plants-before-harvest-may-be-unnecessary/
ruclips.net/video/KTWfSjzqvLI/видео.html
@@professor4202 Excellent information and just what I have been looking for. Thanks.
@@priayief you're welcome1 the migro video is pretty awesome. the two scientists are quite succinct and informative. it's 29 minutes well spent.
happy growing!
I truly appreciate studies like this.
Thank God for sane cannabis laws that allow us to have an open discussion concerning things like this!
Also, thank You people for being intelligent, scientific and informative!
That said, now I Really don't know what to do.
🙄
I imagine in a commercial grow it would save money on nutrients to not flush but it seems to not matter at all in a personal very small grow by the study.
People mention RO water and filtered water..
How about distilled water?
Within 24 hours after flushing my Hydro buckets and refilling them with plain pH adjusted to 5.8 distilled water, the flowers Noticeably lost fragrance.
Now I don't know whether I should add a small bit of nutrient to the water for that small extra bit of terpine profile that the test subjects noticed.
When it comes to flavor, Every little bit counts!
Lots to learn!
Now would you please do a study on drying & curing correctly because we now hear That's the True Key to efficacy and flavor.
A couple of times, I've ended up with pasty tasting crystalline hay..
No One wants crystalline Hay. 😝
Marijuana, when properly grown And handled proves that effective medicine does Not have to taste terrible. Thanks again!
To be honest, this seems rather basic for a study. There are way too many considerations not taken into account. Volume of water for flushes, frequency of watering for flush, time of day for harvest (extremely important for terpene retention) Also, never talked about PPM throughout flower and no talk about how much lighting power was used for the plants nor hanging height of said lighting. Also, in my experience flushing only removes the nutrient available in the medium. Not the plant itself. They uptake and store the nutrition, so in theory the only thing that will change that is time. You can flush a plant from 5k ppm to 400ppm in 40 minutes with heavy watering, but the nutrition is already uptaken by the plant and stored in the cell walls. Also, your charts on terpene retention are boof. At around 7 days monoterps are offgassing which is why you have such a big push in the 10-14 day range thereafter in terpene expression. They'll rollercoaster again thereafter and in around 30-40 days they'll peak in terpene profile expression during a cure. This is why people don't smoke 14 day old dried cannabis. Like wine, it needs time. Nice efforts but would love to see way more detail.
This was well needed thank you ❤️
my favorite topic is the cutting drying process leading into the master cure the part that matters the most
I grew my own it burns black I know it's not from the cure ...
Thanks Shane for organising and sharing this informative video, and to the RXGreen crew. I have been growing for forty years and still learning! Funny how those who are presented with evidence are still denying it. Guess the flat earthers will ignore science and do it their way as usual though.
@Tin Tizzy as long as your not over feeding , your ashes won’t be black residue.
It is clear you did not check the rx green study. Please at least give it a glance before commenting. Please try to find even just a single good thing they did during that 'study' 😂. Cmon man have some self respect... At least if you don't understand (which I highly doubt, the rx green 'study' is very easy to read and understand) then don't post these misleading comments where you are backing up unuseable results
I think u should do more content like this,little slow at 1st but very important content ,just glad to see u guys taking cannabis serious,thank you guys much.
Great post Shane. First video I have watched all the way through in a long time. With the exception all yours Shane lol. Knocked it out of the park again.
When mineral content was discussed, I noticed that nobody was talking about what part of NPK minerals were in organic form versus inorganic form. It was only shown that total mineral content in flowering plants is not dependent on growing medium mineral concentration during last 2 weeks. It is believed that flushing forces plant to convert inorganic mineral buildup into organic compounds. Ex.: nitrates/nitrites/ammonium/amides to proteins, phosphates to DNA/ATP and so on.
Because there is no NPK in the plant material. The plant doesn't process these minerals like that. All of those minerals are broken down into others to help the plant grow. And the plants can't tell whether they get their NPK from organic or synthetic nutrients. Phosphorus is phosphorus, potassium is potassium to the plant.
We need to know what nutrients were used, and what the substrate PH was, along with the runoff EC.
How do you explain cannabis that won’t burn properly because it wasn’t flushed.
When you “flush” do you just stop giving nutrients, or do you actually run water through the substrate until the ec drops to the same level as the input water?
These are important factors
Hi buddie can you be so kind to explain both? many thanks in advance
Honestly bro dont waste your time these people need too read a book.
I think the flushing everyone does is nute starving, not ph lock flushing, with that in mind no they did not soak the plants it's just starving the plant,that's the myth
The way it smokes has nothing to do with the flush that all happens during the curing process where you burn starches and remaining chlorophyll.
@@michaelsheehan7316 Ill say it again, the myth for most growers especially from word of fuckign mouthy since that was the way to really trade info on growing for alot of use back like 8-10 years ago is that flushign helps improve taste, and the ash will be white. these are the main 2 claims of flushing being beneficial I know the pseudo science as to why people believe its true as well so please you can mention starches and chlorophyl carbs etc all you want till your face turns blue that process does not actually make yuour weed taste better and does not give white ash instead of black, that is the main claims of the myth, anything else is your own perception
Here is one for the scientists:
Q: How do I know when my herb is ready to harvest
A: lightly run my thumb down stalk or branch. If pre-flowers come away with a light touch CUT IT. If they persist on sticking to plant try again tomorrow. Kinda like picking apples for Barney down on the farm. If the apple comes away in your hand with a quarter turn it’s harvested? If not try next day. Talking about micro climates in grow areas, one branch may be ripe but the others are not. Evidence gathered over18 month perpetual crop.
Trichomes bud, l’ll start with size.. At this point the Tric, heads are swollen to an optimal size, on close inspection the heads should be almost uniformly round and swollen if ALL is well. The Colour is normally a milky grey for the most part, with older smaller trichomes amber. At this point your plant can turn overnight so some care is required especially the fast flowering varieties. Give your girl a little shake and look for pre-flowers falling off, if so get busy brother. I stumbled over this technique simply by pulling 4 girls every week. I would pick pre-flowers from each girl and save for a test smoke by days end. I noticed that when they fell away with a light touch those were the ones with the largest trichomes and herb bursting with oil. I worked to a tight schedule of 8 weeks solid, so all were not spot on. I would never have cottoned on to this harvesting every 8 weeks. Stay cool.
These two ladies know their stuff !
Might be ok not to flush your plant if you fed at 900-1000 ppm using a TDS meter. On the other hand, some new growers give heavy feedings throughout, creating a nutrient lockout with all the built up salts, a flushing makes a huge difference in tastes believe me. New growers don't even know how acidic some of these flowers foods are and don't even pH balance their nutrients solution. A flush is very good for beginner grows.
It doesn’t remove it from plant it removed it from soil which causes the plant to feed on itself. You can actually see it working so through trial and error I have come up with the results that it most definitely works . It makes your smoke cleaner and better tasting
Not according to their study. They said flushing the soil to starve the plant actually fed the plant more from the medium
The eye roll fom the bottom lady at 22 minutes is hilarious. When the top lady is speaking and says the participants knew one plant had been flushed. Lmfao
i always flush, with every strain, doesn't do any harm and it's something i'm used to take into my routine
if anything it saves us nutrient costs
@William Rice yep! you're totally right, this is a very good video. I didn't flush once and my flower tasted really bad and burnt black. (most likely my fault since i had no idea what i was doing) so i think it's more of a superstition as to why i flush, throwing 65 grams in the garbage isn't fun either!
Ask yourself, in nature, do fruits ONLY fall off after a down pour or simply, when they are ready? Answer lays within!
Flushing works. I've been growing indoor for over 25 years. I don't care what any scientist says. Its obvious that flushing improves flavor,color, and final smoke. I wonder how many of these "scientists" are paid by nutrient companies, or other data bias influences
Do you add sugar or molasses into your flush?
A true scientist...she said, "i appreciate the skepticism".
Excellent and highly informative video. As s craft grower, it's great to be able to work with actual observational data rather than industry folklore. Thank you for your hard work in putting this together.
Go buy a copy of the oaksterdam university's coarse book they will properly teach you what a flush is and what a cure is.
This video is crap.
do what works for you bud
@@topshelfruns2039 absolutely and they're passing off opinions as facts.
And they completely off missed the target to begin with.
We leach the media of nutrients not the plant and our reason is so the plants use up what it has in the plant itself and start the breakdown of chlorophyll.
Chlorophyll is what gives the harsh black burn and hay smell.
30 years growing here and flushing produces a much cleaner smoke.
@@timpage5021 how many times have you grown bud and NOT flushed?
@@DENYAW1 honestly hard to tell over 27 years. Just depends on the grow I’ve set up rather it’s organic dry amendment , hempy buckets , or drain to waste with either coco or soil. If I’m using synthetic nutrients always flush.
RX Green even recommend in their own feeding charts that in week 4 and 5 of flower to give 12ml/gal decreased to 10 in week 6 and 8 in week 7 and a flush for week 8...
lol
So? They been following everyone else in the belief that's what you should do. Scientificly testing that belief is welcome, especially when it seems to be debunking it.
@@3nthusiast Theirs just not enough data or studies on this subject yet. But ill tell ya this much... after 15 years of growing I can definitely say that flushing makes a difference and I don't smoke unflushed product
Flushing has more of an effect on Hydro grown plants with a simple medium like rockwool. Organic super Soils like i utilize are complex, with many different sizes of soil components . Some of which take a long time to break down, and dissolve into a liquid so that it can be flushed out. Nitrogen is the main culprit in adding a green, bitter grassy taste to herb. Discontinuing the use of elements that the plant no longer needs, and increasing slightly what it needs to produce volatile oils near the end. Potassium, and calcium along with other minerals help improve the taste, and oil production. Plants take only what they need from natural soil. In hydro those nutrients are intravenously apply in the water, and enters the plant whether the plants needs them or not. In nature without applications of fertilizers plants fade in color at the end of their cycle. Go organic, and natural all the way, and stop applying nitrogen before flowering. I still flush with pure water the last two weeks.
There's so many old wives tales in the cannabis community. Have you ever heard of the one in which they split the main stem of the plant towards the end of the flowering cycle? Believing it increases potency.
I know with certain strains, the stress caused by this can produce some nice colors but overall, it's quite useless to do lol
yep, the cannabis growing community is full of bizarre ideas and bro-science bullshit. just this year i had someone who has 'been growing for 40 years' (haven't they all?) swear up and down that you should dig up your plant, roots and all and boil it to cause whatever, whatever, bullshit, bullshit. there are so many bizarro world practices in the cannabis community.
just look at all the butt-hurt bro's in the comments...
This video is BS. What is the experience level of the people consuming the cannabis in this test? As a grower and a consumer, I see a massive difference in Flushing versus no flushing. The most obvious when not flushed is the black ash and cannabis that will not burn even if it is bone dry. In my opinion, this is due to a high level of nitrogen remaining in the flower essentially making it fireproof. Second, is a cherry that has its own fireworks. In my opinion, this is due to the high level of phosphorus remaining in the flowers. The metallic or bitter taste in the mouth is offsetting to say the least. It almost has a numbing effect on the inside of your mouth. Not only that but I find "Dirty" Or unflushed cannabis gives me a headache. Chop a plant down without flushing and you will have these results every single time. Flush a plant for a minimum of two weeks and you will not experience cannabis with a black ash, burn problems, or a bitter/metallic taste. This is regardless if it has been cured or not.
This study also didn't just test people in their preference, they tested nutrient levels in flushed and unflushed bud, and found ZERO DIFFERENCE in nutrient levels and chemical make-up between them. Starving your plant does nothing for the buds in terms of making it use up the nutrients already present.
Black ash and uneven burning is almost certainly a result of unfinished drying/curing, as any plant material that has been properly dried will burn entirely, but if theres still high enough moisture in the plant material, it will burn but not completely combust.
"regardless if it has been cured or not" again, your opinion is your opinion, it's unfortunate that its factually incorrect and there's a fair amount of science behind why you're wrong.
Great job Shane. Thanks for the discussion and sound science.
This is great information, big thanks for the research and sharing it.
Thanks for all the great, scientific information! More please!
I still do it 10 to 14 days from harvest but I add a little mag/sulfur and straight water last 3 days. I have harvested green plants definitely require more cure time but by leeching out allowing the plants to yellow buds require less cure and smell amazing 👏
leaching
Thank's for the video, very informative and well presented.Good to listen to such intelligent people speak in depth on the subject.
Still means we should be flushing. To save nutrients!
thats a matter of opinion at that point I think depending on your medium
Stop fertilizing, but not flushing in the sense of flushing out the soil with excess water.
@@stochastic24 I dont agree with that because thats not flushing then...... thats just tapering off nutes which i agree with, but to cut off completely i say no
My bro science theory. Your not "flushing". Your letting the plant consume whatever nutrients are left in the stems and stocks. Then when you dry the plant the flowers are not sucking up those left over nutrients from the stocks .
"Flushing" also causes the chlorophyll to breakdown faster which reduces curing time and makes for better taste. These "scientists" are not "bud enthusiasts" so their opinions are limited to stats.
I think the only legitimate reason to flush is to bring out ‘color’ from the plant more. Although, I think it could potentially be bad as you don’t want leaves dying too early, crisping up and making trimming more difficult as you may have dead nutrient free leaves inside your cured flowers.
derp
100%
They just spoke in circles. I have all this experience huh.
but this was only done in coco hdyro the question is does media matter does the same go for soil dwc other types of systems
Does fruit in nature ONLY fall from the branch after a down pour or simply, when it is ready? Answer lys with!
Hydro plants only need 48hours of nutrient free to flush, 7days to be extra sure. There is a worrying number of fame hungry idiots desperate to put their name to something in cannabis history. If you’ve ever had unflushed bud it snap crackles n pops or doesn’t burn evenly/properly, taste like chemicals, just all round nasty. UK cheese is quite a popular strain and a very unique taste, can tell instantly when the cheese hasn’t been flushed properly due to how it smokes tastes and smells
@@Growdankmeds You need to eliminate your male plants before they drop pollen dude. Your snap crackle 'n' pop comes from seeds in your joint. FFS, at least remove the seeds before rolling if not. lol
@@GerryMantha seeds?? its not 1970 dude
@@GerryMantha all these attention seekers are desperate to put their name to something thats all, fake ass philosophers
This study was headed in the right direction but still fell very short of the goal post, as a cultivator and a connoisseur of marijuana the end product is my most important goal, how we get there is the hard part.
Smell and taste is very important, but not as important as quality of ""smoke"".
Q) What makes the quality of our smoke ""harsh"" (meaning - chronic cough)? Is It ""chemicals"" (nutrients) left behind in the flower or is it something that occurs during the drying/curing process?
I've always flushed my flowers for a period of 2 weeks and cured my flowers using the slowest method possible and the harshness that ruins a great experience still seems to be hit and miss, sometimes the flowers smoke great and other times the smoke is so harsh that it's basically non-smokable.
An answer to this question would be a step in the right direction when it comes to solving the problem of ""harsh smoke"", you don't need to cough to get off, that's an urban legend.
Can you do one on removing leaves from a flowering bud
Here's a cool little fact: Calics/bracts have 140% of the photosynthesis of a leaf (after they start to swell). Not only do you get better light penetration but you also get faster growth, if you defoliate leaves at the right time.
@@seriousskateboarding9938 But when's the right time to defoliate?
just started this video, and I will listen to it all.......but, my initial reaction is that I often sense a harshness/dry chemical taste to the smoke when the herbage has not been flushed, and "guessing" doesn't really factor in very well, after so many years of calling it correctly(and personally knowing the growers and their practices)...........................................many love, much props
Watched the entire video, and still feel not enough importance is given to the flush....it seems more like they were only trying to prove it a false myth, not solve the taste(possibly residuals) issue...What IS the horrible metallic taste??????evidently, just "some people" taste that, endo discussiono........i grow "mostly" organically, and if i cheat and use chem bloom-booster(and dont flush) the weed tastes like complete Shite.......same herbage, different treatment, butthole taste........not scientific??Don't care, and i dont wanna smoke your unflushed weed, Thank You.....................................
@Spectacular Spectacular totally sorry, wasn't trying to give you a hard time, was really only trying to reply under my first comment.....the negativity wasn't directed at you my friend.........
Answer: Inconclusive one way or the other, flush or don't flush, it doesn't matter much at all statistically.
It would depend on your growing medium and method. If you grow in hydroponic methods it would make sense to use less nutrients in the end phase, A for taste (can be discussed) B for money. But, let's say you grow using living soil then there is no need to flush because the soil is having the nutrients and the microbes feeds the plant just what it needs. No need to flush. So both ways works I guess.
@@TheFingolito well if you think about it, flushing the root zone for 2 weeks with plain water will make the “plant” look for nutrients in its leaves, I mean with live soil I’m sure your working with 50 gallons or more of soil, but still, using pure water in the last two weeks will trigger the plant to look for nutrition in itself, this will increase thc,terps, and overall potency, even though your live soil has a shitload of nutrients sitting in it, pure water will signal the plant to collect its nutrients it can’t find in itself, the lower older leaves and branches.
@@TheFingolito I seen a lot of sources about it, but with live soil I don’t know if you would see much a difference as live soil has all its nutrients in the soil already , ready to be broke down by organisms.
@@blainelyster496 Hey man! Yeah I see your point and my interpretation is that this "nutrient deficiency" that we create when we flush is to simulate the natural depletion of nutrients in the living soil that we would find in the nature where you in teh beginning fo the year would have a more nitrogen rich soil because of the degradation of leaves and stumps from the previous atumn and then when you grow indoors you would use a no-till or living soil to emulate the same environment. You have to keep in mind that when we grow indoors you are simulating a 9 month grow over 3 months or less so you will always have a stressed plant and with that lesser potency. Pure water as much as I know does not "trigger" anything, its just that when your plant is out of nutrients in the soil you will start to see nutrient deficiencies which is what you call that the plant us "using up its storage" which is an intepretation but not entirely in line with what happens with the plant on nutrient level. Love this conversation and its so much to learn! :D God bless you brother and your family in this time of health and economic difficulties!
@@TheFingolito doesnt do nothing for taste at least for coco
Meh. Ive done a 2 week flush for 20 years now. After hearing these debates decided to try tapering food back at the end with no "flush" for 3 crops straight.
Wont do that again, put it that way. Ive gone back to water only at the end.
care to elaborate? what differences did you actualy notice?
@@guilhermepaula6496 how about black ash that barley breaks apart .. how about you go to smoke some kief and that burns black ..can you imagine that ...
I always want to know the "how "and "why "..👍🌴👽
Random, but I really appreciate her stance on skepticism. She is a badass
If I get flagged for *badass*, I don't even know anymore..
By cutting off nutrients and continuing to use enzymes and sugars for the last 2 weeks you are essentially using up/absorbing the last of the nutrients in the medium you have already feed/outlaid. pretty sure most nutrient companies have already put out feeding charts stating this.
Totally agree with you on this, i use molasses + enzymes last couple weeks,why flush out all your hard earned cash you’ve put in, let them use it up naturally 🧐
Thats how we do it
As always Shane a highly informative and educational video.
Always flushed my plants for at least 2 weeks. Always tasted awesome, always whitish ash. Once flushed for roughly a week, smoke was much harsher and ash not very clean. Once did not flush some plants, tasted awful and dark and hard ash. EDIT: IT IS BRO SIENCE! EXPLANATION IN THE COMMENT SECTION BELOW THIS ONE.
i think without nutrients = plants start eat chlorophyll from buds and leaves.
Curing starts faster.
@@iamhere444 so. I dont flush my plants. And i dont see difference between flushed and not, totally. (grow only with coco)
@@iamhere444what gives the leaves a green color.
If plant die without nutrients for long time = what happens with leaves and buds color ?
mb i say wrong word before. But....
(p.s sorry for my bad english, language barrier)
I want know why flushing gives better taste for you. And dont do it to me.
I really try and try = but after curing cant see difference.
If mass spectrometer say = elements in plants dont change after flush - we cannot refute it.
If elements dont change. What change ??? = my first suspect is chlorophyll
@@ВанДаркхолменко its always been the target to get a jump on the breakdown of chlorophyll. These 2 individuals are just passing opinions as facts.
Grey Ash or Black? I personally want to see Grey Ash at the end of a Joint. Nothing wrong with a good flush!
Have any of them tried to burn a joint that has black ash and won't stay lit? Weird science
I think flushing came about when nutrients weren't as *clean* as they are now. I think now that most of them are a lot higher grade, they don't leave/give that bad taste any more.
Eh I beg to differ, although it's not unbearable. You can most definitely tell when flower was harvested while being fed some high P-K boosters like mother of all blooms and never flushed.
That's why I said most.
I know of some that leave/have an after taste if not flushed. But that's also one of the reasons I use Cyco.
Nutrients are nutrients at the end of the day. If the plant can absorb and use it. It makes no difference
FlubberOn VHS truth
@@drakkondarkblood6638 cyco isn't organic, I thought the same but was shown to be mistaken
I give a flush but only to help the plant finish, to prevent the plant from trying to grow new growth in those final moments.
Love when someone that's never grown cannabis talks about bringing knowledge to 30 year indoor growers.
Me too. It's always funny seeing some nerd blow the 30year veteran and their old wives tales out of the water. Rigors of science > subjective personal experience.
Flushing in coco does nothing but rinse out any accumulated salts. I do it only because I reuse my coco multiple times and it gives me an head start on getting it clean. I flush between 5 - 7 days.
does coco have "the ability to store" nutes? what about soils ability to produce them... variances immeasurable
Great Video about the Myths and Facts about Flushing Cannabis Plants before Harvest. Good to know some Science based Facts about this, there were lots of Rumours out there about that, but not much Real Data, thank you and RX Green Tec for this eye opening Video !
YEAH ... SCIENCE. How many nutes you buy after this?
@@DrSoapp Less is more most times.Never Trust the Charts of the Companies, normaly i use 1/2 of the recommendet nutes and thats more than enough.
So what causes the different colours of the ash?
carbon content?
Nitrogeon
Were these ppl who were the smoke testers actual growers or just cannabis interested...
When you are using 3 to 5 times the "standard" dosing of nuits and you are using 8 different ferts you have to flush. This reminds me of all the Horticulture degree students thought they could grow pot. Turns out they couldn't. Saw many failed crops cause some ass hat had a degree and ruined hundreds of thousands of dollars in product. The early days of legalization! You flush for all kinds of reasons, bugs, mold, stress etc. These people have no fucking clue on how to grow commercial pot.
Oh yeah white ash is down to moisture content as well as over fertilisation
100%
Very interesting. Wish they had a more detailed and thorough curing process. One of the latest bits of info i've found is that excess nitrogen stored in the bud can inhibit or slow enzymatic processes during the curing or long term curing. Which can the lead to auto oxidation of your product.
please expand on cure time and oxidation if you would.
I was never a proponent of flushing, although I did flush my crop once as an experiment. I tend to believe that the flushing step is unnecessary after this study, and have heard similar experiments where people cannot tell the difference between flushed and unflushed cannabis. However there are so many growers out there who are 'experts' that you will never convince them otherwise. Tradition dies hard.
It’s very much needed or your gonna smoke nutrients
@@leoneforte444 When hydro first came out a lot of that FLAVOR was nuites.
@@KirtCarson well not really, nutrients doesn’t cause flavor it can just make the bud really harsh and add a buzzing feeling, flavor comes from the terpenes, I use organic stuff tho so I don’t really worry about flushing too much I just stop feeding at a certain time like my top dressing fertilizer is only needed once a month so at a certain time I give them their final month worth of food and by the time they need to get harvest the nutrients are basically all used up
@@leoneforte444 Did you not listen? The scientists said nutrients remained in the plant regardless of flushing.
@@davidanderson8469 very tiny amounts remain, but if your using liquid nutrients you have to flush because since they are so concentrated and directly in the water supply it fills everything with it a lot so when your cleaning out the soil by just giving water ur causing for the buds to eventually run out of soil nutrients and starting to rely on leaves and if you start to peel most of those leaves away the bud is mostly gonna be just filled with water and chlorophyll so then you gotta do the drying in the dark
Would love a study not only on flushing but fading aswell
When referring to minerals are they talking about chlorophyll? I've always thought it was chlorophyll we were trying to remove hence the yellowing of the leaves before harvest and proper cure to remove the grassy taste.
Less Clorophyll in the Leaves (yellow Leaves) leads to less Clorophyll in the so or so green Buds ? Makes no Sense to me Since the flower doesnt turn yellow and that should be the case when there is less Clorophyll in the Final Product...
From my understanding you are trying to remove any carbon/sugar reserves the plant may have, which is believed to cause the harsher burning taste as a result of excess minerals upon harvest.
The chlorophyll molecule is made out of nitrogen, magnesium and other.
@@StockedShelves The random taste test demonstrates that there is no real difference in taste. If anything no flush tasted better! Flushing is only worth it to save yourself some money on nutrients. Consider the carbon/sugar reserves leading to harsh smoke theory debunked
This was eye opening. Thank you!
What about flushing as a cure for overfertilization and excessive salt buildup in the growing medium?
What I mean is, start by over fertilizing, or start by putting excessive salts in the growing medium. Then test a control group where you do things normal, and another group where you first try flushing and then switch to normal, etc.
Certainly
I love it That you do not need to flush your plant and i never have flushed my plants and they taste just fine :)
how do you get the white ash ...? I've grown my own ... Even the kief burnt black.. that's not subjective at all... It burnt black and you could not get it to turn gray hardly and it kept it's shape more.
@@paddymills we think it's the drying off it still has a moisture content the ash will burn darker. I am not even sure ash color is a thing. I smoke cigars and ash color varies. I personally think it's another urban legend. Some one said it once and it was repeated as law. White ash meant it was "flushed properly" but as I stated I never flush my plants. And I have rolled a joint got darker ash but when I rolled a cone the ash was white from the same jar.
I wish they had included not watering at all for 0, 7, 10, and 14 days also.
You do it and I’ll sub
there are some vids: here is one in german ruclips.net/video/9xXdw7u13cs/видео.html just use subtitles
@@c.v.3721 I don't speak or read german., much.
@@PeterKKraus sorry didn't see it has only german subtitle
you don't ant to water your plant for 2 weeks? why?
Migro!!!! You rock bro....
i've tried flushed and unflushed, i can't taste any difference!
I would happen to agree
@@OG_VeniVidiVici agreed. Bring down temps, bring down hours of light, water with colder water... I've even seen someone put ice in the pots in the last few days to replicate snow!
I have been growing for 40 years now and have never flushed, I even foliage feed right up until a week before harvest.
but .....when i flush my soil ppm drops and my bud burns and smokes way better.......im kinda lost lol
No your right their test were all hydro, most no there a diff when growing in soil and flushing would be diff tooo
Agreed. Let the know it allS try their no flush methods. I focus on the VPD and optimum health of my plants and flush a minimum of 10 days. Also dry for 7+ days and cure for another 2 weeks. My friends never complain about my product and love the smoke.