On 4/29/2022 8:25 PM, Jane McGary via pbs wrote: > I don't know where this hardiness estimate came from, but I doubt it > extremely. Any alstro that lives where temperatures go this low would > spend the winter under seasonally permanent snow cover. I don't think > they would tolerate freezing at the depth where the tubers and crowns > lie. > > Jane McGary, Portland, Oregon, USA > > On 4/29/2022 6:19 PM, Marc Rosenblum via pbs wrote: >> Alstroemerias have a hardiness threshold very close to 0F [-18 C] >> Ligtu hybrids might push this a bit. If you expose them to colder >> temperatures without protection, you risk losing them. >> >> > _______________________________________________ > pbs mailing list > pbs@lists.pacificbulbsociety.net > http://lists.pacificbulbsociety.net/cgi-bin/… > Unsubscribe: <mailto:pbs-unsubscribe@lists.pacificbulbsociety.net> Jane, I just realized that BOTANICA pages 84-85 also agrees. I think that the estimate comes from reliable sources! MarcR [zone 8b] _______________________________________________ pbs mailing list pbs@lists.pacificbulbsociety.net http://lists.pacificbulbsociety.net/cgi-bin/… Unsubscribe: <mailto:pbs-unsubscribe@lists.pacificbulbsociety.net>