Jim - Do you grow L. radiata v. radiata outdoors?
john
I tried to grow radiata v. radiata outdoors here in the woodland garden. It survived for quite a few years, and during that time it flowered twice. That was early on. Eventually, it stopped flowering in the autumn and put up fewer leaves. Finally, it simply disappeared.
Once burned, twice wise: I planted radiata v. pumila up against the wall outside the greenhouse. It never bloomed there, and also eventually disappeared. So much for wisdom....
I can heartily recommend LL. chinensis, longituba, x-caldwellii, and sprengeri outdoors in the garden in USDA zone 5. Mine do great here. Also, several hybrids involving radiata (presumably v. pumila) and the hardy species do well here, surviving and blooming.
Jim