You piqued my curiosity, and I did a google search on "raspberry usda zone" and came up with the website linked below. They have a list of a bunch of raspberries, but none of them say they're hardy in zone 2. Maybe someone else here has some experience growing them at high altitude? I grow some fine here at 4500' but I'm in zone 6.

Here is a link that might be useful: Raspberry varieties

I believe -5ºF would put you in Zone 5, and as far as frosts on the 4th, that shouldn't be much of a problem for raspberries, I should think. Wild raspberries grow up to 9 - 10,000 feet

You can check out your USDA zone somewhere here on GW or use a more current, little less precise, and unofficial (government-wise) Arbor Day Foundation zone designation linked below.

digitS'

Here is a link that might be useful: Arbor Day zones

Looks like z6. z2 would be -40 to -50 for your winter low.

So hey, good news! You can probably grow all the berries you want in your zone. Except blueberries -- they require acid soil that we just can't imitate very well here in the West.

Hi ParksGardener,

Did you look up your zone in the Sunset Western Garden Book? If so they use a completely different zone system from everybody else. If you're z2 in Sunset, you're probably z5 according to the USDA---and just about everybody else. And if you're z5 or z6 that would mean you could grow just about any kind of small fruit you wanted to--and definitely the ones you named. (z5 goes down to -20, and z6 goes down to -10---without breaking them down into "a and b!" In Arizona, I'm guessing you're more likely in 6a or 6b.

Welcome to RMG,
Skybird

Here is a link that might be useful: USDA Zone Chart