Harvest

Harvest is an ability that doubles the effect of berries when they are eaten.

Effect
When a Pokémon with Harvest eats a berry, it counts as two berries. As a result, the effect of eating a berry is doubled. This includes the berry's original effect as well as the effect on Belly.

Pokémon with Harvest

 * Exeggcute
 * Exeggutor
 * Tropius
 * Phantump
 * Trevenant