I remember finding wild dewberries when growing up. There were never enough to pick and take home for cooking or preserving so we just ate them on the spot. I found them sweeter and juicier than blackberries, but hard to pick as the berry could easily break into those individual globes, whatever they are called.
As I recall, they were mostly in shade or partial shade, such as the verge of woodlands, in fence rows, or under trees but it seems like occasionally some were out in full sun. If they produce on last year's growth like blackberries, the ones in the pasture fields would have been bushhogged off every year so they would not produce anyway. Not sure what the optimum conditions for growing dewberries are. I'm sure you'll do your research. I'm mainly posting because the mention of dewberries brought back memories of a barefoot kid growing up on a hardscrabble farm in ridge country, yet finding plenty of time for the simple pleasures of life. Thank you for those memories.