From City Data:
More evidents that Windmill palms survive colder climates such as NE Tennessee.
I know many people even here in northeast Tennessee with Windmill palms. I actually have one that I had had for 5 years. These are hardy palms though and will survive down to 0°. Actually, I know of a family in Kingsport that even has a large Cabbage palm. Sounds strange, but there are palm trees in Tennessee
Here is the Cabbage and an array of other palms at that home in Kingsport Tennessee (about 25 miles west of here)... Kingsport is about 1100-1200 ft. elevation and just south of the Tennessee-Virginia state line, so its extreme northern Tennessee. *Notice the heavy mulching at the base
Tennessee-Virginia state line, so its extreme northern Tennessee:
OK, it's a 6a zone according to USDA
This Windmill is in Sterling VA, about 25 miles WNW of Washington D.C. Its been there since 1994, and that is a zone 7A. Its a COLD suburb.
I know there's palms here and there in NYC, nothing like Vancouver though (yet), I've seen some Windmill Palms surviving in the dead of winter. There were also palms in Hurricane Harbor (Six Flags waterpark) in Central New Jersey as well as the one in Maryland, however I went during the Summer so idk if they stay there or not. These are all Zone 7/8-ish areas, the vast majority of the "Northeast" is much colder.
Windmill palm will die at 5F (-15C), NE tennessee (This is a very good experience to learn from, at least we will need to protect it if the forecast is -15C (5F) in Toronto/SW Ontario
No, the windmill palm is under a Mimosa (sp?) tree and at the southwest corner of the house. My last Windmill lived for 8 years and was huge... then we had an usually harsh cold morning when the temperature dropped to 5° (which was a record in January) and then it started to brown and never recovered. I thought after 8 years it would have been able to withstand a 5° temperature (I have heard they are OK down to about 0°), but not this one. I was crushed when it perished.