I don't think that this hybrid is more hardy than Y. linearifolia or thompsoniana. This spring I planted one of my seedlings, I hope it works. But Jost, a friend of me an Tim here in Germany, has no success with a seedling in the past winter. Maybe the seedling was to small, even a few month old.
Yucca hybrid roots - Tim MA z6 May 6, 2012, 9:58 pm
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