A Poison Plant is meant to resemble a large flower, and is much larger than any of its relatives. Its base is black and is surrounded by four salmon pink leaves, while its stem is light green. Its hexagonal face is black with yellow border. Its mouth is jagged and its eyes are glowing yellow. Its face is decorated by four salmon pink flower petals with white edges. The Heartless emblem is emblazoned on the lower half of its body.
The Poison Plant's name clearly references its floral appearance, as well as the poison it fires.
Poison Plants can be a slight challenge to defeat when one is at a low level, but they become easier to eliminate as the player becomes stronger. They have the most HP out of any Heartless in their family, able to shoot flower-based projectiles at the player that can deal the Blind status effect. This ability has slight homing capabilities and a relatively long range, but can be easily avoided with Glide or a chain of Dodge Rolls. Poison Plants only have one other technique in their arsenal, one that involves them slamming their head multiple times against the ground, which can deal the Shoe-Glue status effect. While this attack has a short range and does not deal that much damage, it should be avoided through the use of Dodge Roll.
Poison Plants are extremely vulnerable to the Fire spell and its variations. They also have a strong chance of being Burned when the Fire spell makes contact with them. While Thunder, Blizzard, and Aero magic can also be used against these Heartless, one should switch to the use of aerial combos once they run out of Fire spells. Normal combos should be avoided, as the Heartless don't take damage when their bases are hit, and this usually leaves the player vulnerable to the head-slamming technique. Thus, it is highly recommended that the player bring several Ethers into a battle with a Poison Plant. This way, they can deal heavy damage from a distance while avoiding almost all damage.