I am in temporary digs while I look for
land.
Missoula is USDA frost zone 4b.
As for a festival: during the warmer months, I doubt that anybody in the US has a farmers market nearly as good as the one in missoula. During the summer, every wednesday is "out to lunch": music and food vendors with a massive turnout from the community.
And the carousel: every horse is hand carved by the missoula community.