My aunt had Convolvulus boisierri in her rock garden for a few years. However, I'm not sure how she kept it alive. She's in USDA zone 5b and I can't find anything on the Internet stating the plant is that cold hardy. Unfortunately her plant died during winter. Not sure why. The weather may have been too wet during that winter. Anyone have experience growing this plant in zone 5? My aunt probably bought her plant from Wrightman Alpines but the plant is not available in their online store right now. Anyone know where I can get this plant?
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Mike McGarvey
PolypompholyxOriginal Author
Mike McGarvey
PolypompholyxOriginal Author
Mike McGarvey