Bouldeneu

Diamond +3: It ensnares prey by extending arms made of vines. Losing arms to predators does not trouble it.

Platinum +2: Its arms are made of plants that bind themselves to things. They grow back right away if cut.

HeartGold: When it remains still, it appears to be a large shrub. Unsuspecting prey that wander near get ensnared by its vines.

SoulSilver +2: Its vines grow so profusely that, in the warm season, you can’t even see its eyes.

Black 2 / White 2: Even if one of its arms is eaten, it’s fine. The Pokémon regenerates quickly and will go right back to normal.

Sword: Tangrowth has two arms that it can extend as it pleases. Recent research has shown that these arms are, in fact, bundles of vines.

Shield: Vine growth is accelerated for Tangrowth living in warm climates. If the vines grow long, Tangrowth shortens them by tearing parts of them off.

Legends: Arceus: Draped with long vines, it resembles a shrub in appearance. It swings bundles of vines as though they were arms, wrapping them around prey to ensnare them.