Decide for yourself where berries are produced. The berries get picked, and grow back again over time.
You may like to use other mods like Aladdin's Lamp to remove select vanilla berries from the map, or Wild Berries which introduces a different gathering/foraging system (and removes vanilla berries entirely from the map). Add market carts, fences, and decorations for the full effect!
Many thanks go to Minotorious for the EBF mod, Batyushki for his hats and baskets (and so much more), and to everyone in the Foundation discord community for discussion, feedback, ideas and for generally being awesome!