In Stage 5,
Flower Garden has the following effects:
Grass moves increase in base power to 3x
Bug moves increase in base power to 2x
Fire moves increase in base power to 1.5x All damage that Grass Pokémon received will be reduced to 0.5x
Flower Gift, Chlorophyll, and Leaf Guard are activated
Swarm is activated, and will triple the base power of Bug moves rather than increase it to 1.5x
Overgrow is activated, and will triple the base power of Grass moves rather than increase it to 1.5x
Harvest will always find a berry at the end of each turn Flower Veil will also halve damage done to the bearer and allied Grass types, in addition to prevent allied Grass-types from any of their stats being lowered
Moves that now target both opposing Pokémon in doubles battles rather than just one
Moves whose base accuracy becomes 100
Rototiller’s stat-changing effect is amplified, and will now boost the Attack and Special Attack of the user (in addition to or regardless of their typing)
Growth’s stat-changing effect is tripled.
Cut will increase in base power to 1.5x, and will now hit Grass-type Pokémon as if it were super effective
Sweet Scent will lower targets’ Special Defense and Defense in addition to Evasion, and now will triple its effect
Petal Dance, Petal Blizzard and Fleur Cannon will have their base power increased to 1.5x
Infestation will deal 1/3 of the target’s max HP per turn rather than 1/8
Flower Shield will now boost both Special Defense and Defense of other Grass-types, and will boost the user’s Special Defense and Defense (in addition to or regardless of their typing). Its effect is now doubled.
Ingrain’s healing effect will quadruple
Floral Healing heals 100% target's HP (from 1/2)
Nature Power becomes Petal Blizzard
Camouflage changes the user's type to Grass Secret Power may lower Evasion, Defense, and Special Defense. Secret Power’s effect is now doubled.
Transitions to other Field Effects Cut will reduce the field to Stage 4
Acid Downpour will reduce the field to Stage 1
Moves that will ignite this field in the absence of Rain or Water Sport and turn it into a Burning Field
Synthetic Seed boosts Special Defense and applies Ingrain to the user.