I grew up in Sudbury, Ontario, Canada. Blueberries are a big part of living there. They grow wild all over the area, and there are always pickers scrambling around the rocks...free for all! Everyone seems to have "their spot" for best picking. I can say, for sure, that the small, intensely coloured berries I grew up with are far better than the monsters you find in the supermarkets.

Here is link to a .pdf that talks bout the particulars of blueberries in Sudbury Credit: Joe D. Shorthouse is Professor Emeritus in Department of Biology at Laurentian University

https://www.blueberryfestival.ca/Blueberries%20-%20Star%20St...