Good chart! It shows my zone of 7b to be at 0-5 degrees... it’s exactly 3 degrees outside our door!
Looks like we’re in 8b. It’s nice to know where we are, but turn me around 3 times and caa poo eee, I’m lost.
Has that map been adjusted for Global Warming? LOL
We’re on the line between 4A & 4B winter temp-wise; but many of the catalogs & Arbor Day insist we are now Zone-5.
Practical side means we don’t order it unless A) it says Zone-3; OR B) we already know it grows here; or C) we have asked the local Extension office about it.