Have you ever had to choose between several attractive cultivars of one plant, and wished you knew which one was the hardiest? Me, too. That’s why I’ve created this page. Every time I find out about the hardiest cultivar or species of a plant, I’ll put the information here. I expect lots of help from the reading public here! You don’t have to have grown it yourself if you can cite your source of information. (This was originally called Name That Plant!)
Botanical Name | Common Name | Hardy to zone | Source/Comments |
---|---|---|---|
Arisaema amurense subsp robustum, green form | none–it’s an Asian relative of Jack-in-the-Pulpit | 3 | Original source out of business. However, while it makes it through the winter in my garden, it emerges too early and I have to protect it from early frosts. |
Caryopteris X clandonensis ‘Arthur Simmonds’ | 5 | Forestfarm | |
Cotinus coggyria ‘Nordine Red’ | ‘Nordine Red’ purple-leaved smokebush | 5 | “I have planted Cotinus in several locations and have planted both Purple Smoke Bush varieties. I have found that all may die back to ground in harsh winters and ‘Nordine’ is weaker than the standard form. The nice thing about the dieback is that new growth always has more brilliant leaf color. There probably won’t be any flowers but I grow it for the foliage anyway. By the way, we have one huge Cotinus in Oneonta in the yard of the public library (not purple) that looks like a spot of fog in the lawn when it is in full bloom. Spectacular.”–Penny K. See also my experience here. |
Clematis ‘Prairie Traveller’s Joy’ | 1 | “I have been growing this ironclad hardy huge (15′ tall ) white clematis in Edmonton, Alberta for years now. The late summer blooms are the size of a quarter, and have a lovely light almondy scent. …You can also easily take shoots from the bottom for new plants.”–Pamela M. Source: Rundle |
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