I have lots of wild berries on my land. Black cap, black berry, and elderberry. With all those present, I only have a few small areas of wild red raspberry. It is in areas that do not have any of the other berries around. My land is in the Central Sands area of Wisconsin so I do not know how raspberries would grow in wetter spots. When I did my every third row thinning of my pine trees, all outside rows adjacent to roads or fire lanes were harvested. This allowed more sunlight to penetrate to the understory and coincided with the explosion of berry bushes on my land.