Will there be bees or other insects inside your GH to pollinate the blueberry plants? If so, they would probably do fine planted in the ground as long as it doesn't get too cold for that variety. I have 5 plants in large pots (Northland, a half-high type), which I move into an unheated high tunnel for the winter and then outside during the growing season. My main reason for keeping them in pots is that our soil tends to be alkaline and it seems easier to give them the pH they need by keeping them in pots. Best of luck with growing your blueberry plants!
