Magost Berries are a kind of non-effective berry. These berries are fairly rare in Hoenn and Sinnoh. In Generation III, the Berry Master and Kira in Sootopolis City will sometimes give you this berry. It takes 24 hours to grow and will give 2-4 berries when fully grown. It will always make Brown PokéBlocks. In Generation IV, it still takes 24 to grow but gives 2-10 berries when fully grown. It will make a Bitter-Sweet Poffin if you cook alone.