If the holder is hit by a supereffective Fire-type attack, it will consume its held Occa Berry and halve the attack's damage. If the holder has Ripen, the damage is multiplied by 1/4.
An Occa plant will yield 1-5 Berries. A growing Occa plant's soil dries by 6% every hour, fully drying out in 17 hours.
Generation V
Planted 0 hours
Sprouted 27 hours
Taller 54 hours
Flowering 81 hours
Berries 108 hours
An Occa plant will yield ? Berries.
Generation VI Pokémon X and Y
Planted 0 hours
Sprouted 8 hours
Growing 16 hours
Bigger 24 hours
Budding 32 hours
Bloom 40 hours
Berries 48 hours
An Occa plant will yield 3-20 Berries. During its growth, watering the plant adds 1 Berries to the final harvest, weeding it adds 0.5, and removing a pest adds 2. Occa plants attract Ledyba as pests.
Pokémon Omega Ruby and Alpha Sapphire
Planted 0 hours
Sprouted 8 hours
Taller 16 hours
Flowering 24 hours
Berries 32 hours
An Occa plant will yield 2-10 Berries.
Generation VII Pokémon Sun, Moon, Ultra Sun, and Ultra Moon
Planted 0 hours
Sprouted 30 hours
Taller 36 hours
Flowering 44 hours
Berries 48 hours
An Occa plant will yield 2 Berries if Isle Aplenny is at Phase 1, 4 Berries if it is at Phase 2, and 6 Berries if it is at Phase 3.
Generation VIII Pokémon Brilliant Diamond and Shining Pearl
Occa Berry is introduced as a Pokémon Tool card in the Pokémon Trading Card Game during the English Scarlet & Violet Series (the Japanese Scarlet & Violet Era). It is first released in the Japanese Stellar Miracle expansion, with artwork by Studio Bora Inc. The Occa Berry card has a one-time effect of reducing attack damage from an opponent's (Fire-type) Pokémon done to the Pokémon it is attached to by 60. After its effect is applied, the Occa Berry is discarded.
Trivia
Origin
The Occa Berry's design and name may be based on cacao, specifically, the cacao fruit pod.