I ordered this daylily last year but it didn't survive the winter although it is rated down to zone 4a on several gardening websites. I mulched it heavily and it is in a very protected area in my garden bed where I've been able to grow other plants not usually rated for my zone. Fortunately, the vendor has agreed to replace it but he said it was rated for no lower than zone 5a.
Has anybody been successful growing Malachite Prism in a colder climate? Are there any special considerations or tips you can offer? I had searched all over for this variety and as it was a rare (and expensive) find, I don't want to lose another one.
