PalmsNorth.com – Cold Hardy Palm Forum

I do like that map! Methinks it is a little generous in some areas (extent of zone 5 along the shore of lake ontario and the st. lawerence river; only...

The zone rating (USDA, I don't use the Canadian map, it just causes people to underestimate how cold they get) is based on the average extreme minimum...

Palms look great, so do the Agaveaceae, with the exception of that americana which might be soup!

Aaron, don't feel too badly. Sclerocactus turn to mush here during their first winter! If that doesn't kill them the next summer will, they can handle...

I'd say the Opuntia is one of the Opuntia phaeacantha types, following Andersen (He lumps many of the 'species' like O. chisoensis and similar under p...

With a picture we'll be ablt to (probably) get an I.D. for your Opuntia.

Just wondering who here has actually had a temp this winter BELOW their zonal rating? Toronto- z 6a, z. 6a low.Kingston- z4b/5a, z. 5a low.

Damn it Jim! You make me miss the Southwest so much!Thanks for sharing.

teebee- If you remind me I can send you seed from the hardiest Agave around, A. utahensis ssp. kaibabensis, from above the North Rim of the Grand Cany...

Excellent plants. Man I wish Agave were hardy here!Have you tried Agave montana? If not I suggest that you do. I'd say they "almost" survive a zone 6 ...

We hit -21.5 here in downtown Toronto last night (-6.7F, zone 6a, it is a zone 6a). The airport hit -24C or -11.2f, a zone 5b temp (it is a zone 5b!)C...

Crape Myrtles:A person to ask is Kevin at Southcoast gardens. He has the most experience of anyone that I know, with the widest range of species. I kn...

Ha!Cam, no the power here is below ground so we did not lose it at all. Neither did my place in Toronto (luckily). The ice is thick but it's perhaps 1...

I can't find the downtown data here, but Pearson has hit -18C so far. Kingston tells me that it hit -28C, but the data is coming from Watertown, NY, w...