In that area potted bb should over winter fine outside. If it gets really cold, say in the teens or lower, then move it to the most shelter area you have but not inside. An unheated garage would work for short periods of cold. But during normal temps they'd be better off outside.

I'm in southwest WI. I tried overwintering in an attached garage and that didn't work too well. I had lots of dieback and even some dead plants. Now i bury them for the winter and they do great....i have to wrap them in fencing or the rabbits will eat everything.

Very helpful, thank you. Sounds like my plants should be relatively safe in mild winters. Fingers crossed!

You need to do nothing :-) Blueberries in containers are totally winter hardy without any protection in western WA.

I wish I could say that! I need to protect mine here in 6a. It's a hassle, but worth it.

You could try Siberian Blueberry (Mayberry), these withstand more sever winters than common blueberry

They can survive here. I have three in the ground. But in pots they need protection. I ran out of ground room and wanted more blueberries. I may order more too.

@zone4fruit__WI__franktank232, I'm in Madison! I was hoping to overwinter my potted blueberry bushes in our attached, unheated garage, so I'm disappointed to read your post. What do you mean when you say you "bury" your potted blueberry bushes?

BTW, just curious why you have your plants in pots? I'm trying a transplanting experiment because we're about to embark on extensive home renovation and I want to see if I can keep at least some of my bushes. Not sure if the renovation will be done in time for me to replant them this fall.

I overwinter mine in an unheated garage, some die off on plants that are zone 7, but all zone 6 or lower plants were fine. I hope to do it again this year. The die off was minimal and not important.