When Ivysaur evolves into Venusaur, its body grows to a much larger size; the skin becomes rough and bumpy, the eyes become smaller and the pink bud blooms into a large open flower with yellow splotches on the pink petals. The flower is supported by a thick, brown trunk surrounded by green fronds. A female Venusaur will have a seed in the centre of its flower.
Venusaur is very rare in the wild, though it has been known to reside in forests and grasslands. It uses its flower to catch the sun's rays to convert them into energy, which causes the flower to take on colours that are more vibrant. The flower releases a soothing scent that attracts other Pokémon. This scent becomes stronger after a rainy day.
- Razor Leaf - Venusaur flings its sharp leafy fronds towards enemies.
- Petal Dance - Venusaur scatters petals in the direction of the enemy which surround it and inflict damage over several turns. The toxic petals can also confuse enemies.
- Take Down - A reckless tackle attack. While Venusaur will severely damage its opponent by bringing its full weight down upon them, its ungainly body is not suited for such maneuvers and it will also hurt itself with this move.
- SolarBeam - Venusaur gathers up sunlight with its flower then releases it towards the enemy as a powerful energy beam.
In Pokémon X/Y, Venusaur can be transformed into Mega Venusaur using the Mega Stone Venusaurite. In its Mega form, Venusaur's flower grows larger, growing additional leaves and vines. A smaller pink flower also appears on its head.
The Mega Evolution is temporary and only occurs during battle if the Trainer is carrying a Mega Ring and the Venusaur holds the corresponding Mega Stone.