How long can jerusalem artichoke tubers survive in the fridge?

So I bought jerusalem artichoke tubers in the spring but never got around to planting them. They've been in my fridge for a couple of months. Anyone know if they stay viable that long? I want to plant them either now or maybe I should wait til the fall? I need some advice thanks. Also I am in the same predicament for asparagus. Do you think they are still good? I kept them under the same conditions for the same amount of time.

Matt
by the way, I'm in zone 6b in NJ just south of Trenton.

I'd soak them a little and get them right in the ground asap..

OK thanks for the fast response! Is that for both the J. Artichokes and the asparagus?

I agree with Brenda, get them both in the ground, and maybe give them a little TLC in the way of making sure they stay moist (not soggy!) throughout the summer.