Berry Master

Locations
Johto - Goldenrod City

Hoenn - Mauville City

Sinnoh - Hearthome City

All
Shovels(see Farm)

Surprise Mulch

Boost Mulch

Rich Mulch

Amaze Mulch

Johto
Squirtbottle - increases chance of mutations in Berries

Hoenn
Sprinklotad - increase chance of Berries replanting themselves upon death.

Trades
Will trade sets of Berries for battle items, different kinds of Pokeballs, items usually found in the Underground, and Protein.