I have 6 small blueberry plants planted last year in a raised bed beneath my large maple tree. It is south facing, so they get some morning sun until 10:30 and a tiny bit of afternoon sun between 2:30 and 4:00 though in the afternoon its filtered and scattered light usually. They havent flowered this year, but I also attribute that to me not pinching off their flowers last year and because I didnt have the proper PH for them.