lorie-la, there is a lot of information on the forum that you could research. I have posted a thread below that should be very helpful. You definately have the coldest climate I have seen on this forum. I wish you the best of luck.

Vinnie

Here is a link that might be useful: Winter Storage Coming Soon

lori ,

brrrr i thought we had cold winters but i see your in colder zone.
Are your plants 1 or 2 seasons old?
Reason i ask is because when mine were that age i had die back on them not completely as i stored them in unheated attached garage on the cement floor in there pots but following spring they grew nicely and each year afterwards i had less dieback. When i say dieback in the early spring i would notice part of the ends of the branches would suddenly be black which i did not see in winter storage and had to cut them off. Its kinds like a cane on a rose plant that turns black its simply dead at that point. Now plants are older and last season in garage temps for several weeks were in the teens, coldest temp in garage was 6 to 8 above for a few days when we had outside temps at night hit a minus 23 and minus 18 for several nights the coldest winter we had since i grew fig plants but no damage at all. If your plants are very young and you have garage put them up high and put a old blanket and or cardboard box around them for some added protection expecially when overhead door opens because the garage temp will drop instantly. Or if you have basement thats another option, if you have unattached garage be careful as you must protect very well or the temps in there in your zone could kill them. My neighbor i gave a plant that was several years old and he put in his outdoor shed and covered with blanket and following spring it was completly dead, then i gave him a several year old sals plant and he put in his attached garage like mine but he has door open a lot when he blows the snow off driveway or he had small house type door that he installed in back of garage opened when he was inside working , this spring what would have been sals 4th season died completley. So outdoor unattached garage or shed defintely protect plant with a wrap of some sort, attached garage protect plant also in your cold 3 zone, basement i would say just thro something over it to keep the lights off it so it sleeps well. Some here on forum such as me give them a small drink not a watering in winter as temps allow an soil dries and some do not with no problems.
Im sure you can store them and they will be ok but if young you will get some branches near the ends that will die back which is ok.
Hope this helps and please let us know next srping what happens just cover them well and be careful useing plastic for if you do let the top breath a little so when warmer temps arrive they can get a little air circulation. Perhaps others in cold zones can add a little , this has worked well for me in my 8th season with same plants. Oh another thing some of the hardier plants will have a better chance than some of the less type storage wise and fruiting wise in your area.
Best Luck and Health
Martin