I'm not sure if you can. There might be a fertilizer for that, and fertilizer definitely makes MORE berries. I suppose, just plant berries in every spot you can. Mark the spots on your map.
Hope this helps. :)
Mulch
It's practically just food for Pokemon that you can make using berries. You can mix the various berries in a Pokemon center.
You can't make berries grow faster without cheating. You have to wait. But, you can do something so you don't have to wait in the long run. Water your berry plant as much as possible, so that way, when you pick the berries, if you watered them enough, you could get up to 20 berries! I'm NOT joking. So which one would you rather do: waiting at least 50 hours, picking 2 berries ever 12 hours, or picking 12 berries in one round?
Regular BERRIES. (Oran Berries in HeartGold).
No, you can't buy berries in Pokémon Diamond.
Dingle Berries
i think 20 berries
oran berries
poffins and berries
In the world of Pokemon there are 4 types of mulch: Growth mulch Speeds up the growth of berries, but dries soil faster Damp Mulch Slows the growth of berries, but causes the soil to dry slower Stable Mulch Extends the time ripened berries reamin on the plants before falling Gooey Mulch Ups the number of times new plants grow where mature plants withered Which of these are best for raising berries in pokemon?
To get free berries on Pokemon Pearl, you pick berries you find around the region, plant them, and then pick them again when they are finished growing. With these, you can start the cycle again.
No. But some people give you berries and you can pick/plant them