I have a container semi-dwarf blueberry bush, Sunshine variety, which is adapted to my climate. It is probably the most problem free plant I have ever owned. This is my third season with it and it has proven to be very disease resistant and pest resistant. Besides some pruning when it goes dormant for the winter, it requires nothing outside of feeding it once a month during the growing season. It is attractive to every spider on the planet for some reason, but that's great, IMO, besides when I go to pick the berries! For just being a container plant, it is a heavy producer of very sweet blueberries. I have gotten about 7lbs from it this summer and there is probably about a pound left on the bush. The pancakes these babies have made are so delicious and they are really good fresh in my homemade skyr! I put about 4lbs in the freezer.
I am definitely going to pick up another of these next spring at Costco (assuming they carry, but they have for the past few years so...hope!). Renters, if you have patio/balcony space you can have a container blueberry bush! Just look for a dwarf/semi-dwarf variety and make sure it is one that is suitable for your climate. I love mine so, so much.