Alstroemeria
Marc Rosenblum via pbs (Sat, 30 Apr 2022 01:00:59 PDT)
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.
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Jane,
I just realized that BOTANICA pages 84-85 also agrees.
I think that the estimate comes from reliable sources!
MarcR [zone 8b]
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