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hi guitara, good collection and I find it interesting that you say you have never had to treat for pests before. So no aphids, mealy bugs, slugs, spider mites or thrips? They are all fairly annoying, like mites can linger and cause a new outbreak months later again but nothing is as annoying as thrips. They can survive a nuclear blast, over in the states they can use a pesticide that is quite effective called imidacloprid but in the EU it was banned and it's very very hard to get effective pesticides against thrips. Why do I keep going on about them? Well for one I have been battling them myself for 3 years, it's a never ending ongoing battle. They are the most resilient and annoying pest, so much harder to tackle than mites or any other pest and sorry to be the bearer of the bad news but they are clearly visible in this video. Scroll to the 15:30 minute mark where you show your Cattleya Schilleriana, saying yourself it has been stagnating. The reason is because it is swarming in thrips. Look closely at the bark while you show the plant and you will see them scurrying across the roots like little ants. I already mentioned I suspected the plants you were getting rid of recently were suffering from thrips, I suspect your garciana is too. Those harmonica leaves are generally a surefire sign the plant is dehydrated due to thrip damage, they suck moisture out of the leaves and roots and cause those distorted leaves. Many growers assume and spread the notion that it is caused by underwatering but this is rarely the issue as watering more will hardly ever fix things. It's thrips that are to blame, at least in my experience they have been and they can be persistent jumping from one plant to the next so by the time you have treated one, 2 more have become infected and it's been going round in circles for years at mine already. It probably took me 1-2 years to fully realize how extensive my thrip problem had become since they are hiding experts. Also as nymphs they are not visible with the naked eye, they are too small., only the adults are big enough to see. So your plant could be swarming in 1000's of babies and you would never know. Considering we can see quite a large infestation on this video alone shows to me anyway how extensive the problem could be. Plants from the shelf above will have been dropping larvae to the plants below, they can hop and fly a little so can't go up but always end up dropping down on plants below. They love dendrobiums so your dendrobium nobile is bound to have them by now. If I had to guess I would say the vanda coerulescens dark brought them in, that definetely has them. Quote " doesn't look very healthy, I treated it for fungus, I see no pests, It was never healthy when I got it" - clearly pests. In hindsight you then think doh, it was so obvious. The signs did all point to it but unfortunately thrips catches everyone offguard. If I weren't pointing this out now you would take many months maybe even years not realizing you have a problem. Flowering sized plants can grow with thrips for many years and do ok, takes years for thrips to kill a plant if they ever do but it's seedlings that really struggle and where you notice the setback they cause the most.
Hi Tom, I know what you mean, these little white bugs were freaking me out as well at first but they are springtails - good bugs that eat dead material in the pots ☺️
I am glad you have some time to post again. :) I always appreciate your honest critique!
Wonderful collection!
hi guitara, good collection and I find it interesting that you say you have never had to treat for pests before. So no aphids, mealy bugs, slugs, spider mites or thrips? They are all fairly annoying, like mites can linger and cause a new outbreak months later again but nothing is as annoying as thrips. They can survive a nuclear blast, over in the states they can use a pesticide that is quite effective called imidacloprid but in the EU it was banned and it's very very hard to get effective pesticides against thrips. Why do I keep going on about them? Well for one I have been battling them myself for 3 years, it's a never ending ongoing battle. They are the most resilient and annoying pest, so much harder to tackle than mites or any other pest and sorry to be the bearer of the bad news but they are clearly visible in this video. Scroll to the 15:30 minute mark where you show your Cattleya Schilleriana, saying yourself it has been stagnating. The reason is because it is swarming in thrips. Look closely at the bark while you show the plant and you will see them scurrying across the roots like little ants. I already mentioned I suspected the plants you were getting rid of recently were suffering from thrips, I suspect your garciana is too. Those harmonica leaves are generally a surefire sign the plant is dehydrated due to thrip damage, they suck moisture out of the leaves and roots and cause those distorted leaves. Many growers assume and spread the notion that it is caused by underwatering but this is rarely the issue as watering more will hardly ever fix things. It's thrips that are to blame, at least in my experience they have been and they can be persistent jumping from one plant to the next so by the time you have treated one, 2 more have become infected and it's been going round in circles for years at mine already. It probably took me 1-2 years to fully realize how extensive my thrip problem had become since they are hiding experts. Also as nymphs they are not visible with the naked eye, they are too small., only the adults are big enough to see. So your plant could be swarming in 1000's of babies and you would never know. Considering we can see quite a large infestation on this video alone shows to me anyway how extensive the problem could be. Plants from the shelf above will have been dropping larvae to the plants below, they can hop and fly a little so can't go up but always end up dropping down on plants below. They love dendrobiums so your dendrobium nobile is bound to have them by now. If I had to guess I would say the vanda coerulescens dark brought them in, that definetely has them. Quote " doesn't look very healthy, I treated it for fungus, I see no pests, It was never healthy when I got it" - clearly pests. In hindsight you then think doh, it was so obvious. The signs did all point to it but unfortunately thrips catches everyone offguard. If I weren't pointing this out now you would take many months maybe even years not realizing you have a problem. Flowering sized plants can grow with thrips for many years and do ok, takes years for thrips to kill a plant if they ever do but it's seedlings that really struggle and where you notice the setback they cause the most.
Hi Tom, I know what you mean, these little white bugs were freaking me out as well at first but they are springtails - good bugs that eat dead material in the pots ☺️
My dendrochilum wenzelii never blooms too..!! Just keeps pushing out newer growths 😔😕
At least I'm not alone in this 😅 if you figure out how to bloom it, let me know 😉