On 2/18/2017 7:47 PM, Bob Nold wrote: > F. raddeana almost always freezes here. In my experience, its foliage > is much more tender than that of F. imperialis, stenanthera, > sewerzowii, and maybe eduardii. When I mentioned that "moderate freezing" would not damage the plants, I meant temperatures down to about 20 degrees F (about minus 6 C). Much colder temperatures are likely to occur in Denver, Colorado, where Bob lives. All my plants in the covered but open-sided bulb house (Mediterranean house) recently experienced more than a week of constant sub-freezing temperatures, but I see little damage so far. The open garden had about 30 cm of snow on it at the time, so the smaller plants were well protected. I think the survival of the bulb house plants is due in part to their foliage being dry, and in part to the fact that they're in the ground in raised beds or in plunged pots, not up on benches. During the several severe cold periods (severe for western Oregon, anyway) this winter, I moved container plants to the ground on the covered patio or in the center aisle of the bulb house and covered them with microfoam row cover or mover's quilts. I have very few really tender plants, which I keep during winter on a bench under lights in the garage. My former home had a big solarium, which allowed more indulgence, but having downsized, I also had to edit my plant collection strictly. Jane McGary Portland, Oregon, USA