California Lilac, Victoria Ceanothus - New Planting December 17

Bought this because it is evergreen, 8 ft tall and has blue flowers. Potentially to replace the Viburnum, if and when it dies. The Viburnum is 20 years old! Want to keep this California Lilac as a back up and have it a reasonable size when it is needed. For now, planting it in a bigger pot to help it get through Winter. While it is a zone 7 to 9, it can only survive our zone 7 winter if planted in ground. I should have a zone 5 plant if kept in a container. I am pushing this but cannot resist having an evergreen with blue flowers in my yard but do not have any other spot unless my Viburnum goes.
Home garden in western Canada zone 7
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