Not much. They are supposed to be much like blueberries in taste, but the bushy plants with dark blue elongated berries don't need an acidic soil for growing. Hardy in at least zone 5 and higher, probably in zone 4, but I don't really remember.
I have had mine for three years. Year one--purchased and planted in "nursery". Year two--drought with flowers but no berries. Year three (this year) -- I had a late frost that took the flowers. Hopefully, this year I will have better things to say about the fruit.