Thorn Weed

From the Super Mario Wiki

Thorn Weeds are a sub-species of Seed Weeds found in Ancient Waterworks, old ruins in Wario: Master of Disguise. The Wishstone turned some Seed Weeds into walking plants with spiky heads. The spikes are so heavy it can't move without firing off a few of the first. That is the way these plants attack Wario-they fire their spikes at Wario and Wario must avoid them. Dragon Wario can easily dispose of these nuisances.

[edit] In-game Description

The Wishstone turned this plant into a hulking beast, but its spieks are so heavy it can't move without firing off a few of them first.

Wario: Master of Disguise
Disguises	Thief Wario • Cosmic Wario • Arty Wario • Genius Wario • Sparky Wario • Captain Wario • Dragon Wario • Wicked Wario
Locations	S.S. Caviar • Smithsnorian Museum • Sneezemore Cave • Poobah the Pharaoh's Pyramid • Ancient Waterworks • Sweatmore Peak • Blowhole Castle • Carpaccio's Lab • Allergia Gardens
Bosses	Mad Hat Mk. I • Mad Hat Mk. II • Sphinx • Head Honcho Carpaccio • Poobah the Pharaoh • Ka-Bloom! • Barfatronic Lavachomper • Stuffy the Dolphin • Mad Hat Mk. III • Carpaccio • Terrormisu
Enemies	Amphibigun • Battle Salmon • Blamses • Blow Globe • Bombat • Buffy the Dolphin • Cyborca • Dave • DaVincheese • Fluffy the Dolphin • Galley Cat • Gooey • Horkus Porkus • Jack the Knife • K9 Cannon • Lurchin • Mellow Kitty • Mr. Cheeky • Munchelangelo • Nigel B. Whistlebottom • Noobis • Officer Kicksworth • Puffy the Dolphin • Pushy Cat • Ramenses II • Ratfael • RoboUrchin • Rolltergeist • Sarcopha Guy • Scare-Oh! • Seed Weed • Sergeant Houndstooth • Sir Flap-A-Lot • Sir Hop-A-Lot • Sir Lance-A-Lot • Sir Steal-A-Lot • Sir Worth-A-Lot • Slaughterfork • Slithervine • Snackeral • Snow Globe • Sphinx Jr. • Spoonatic • Squabble • Stankulus • Stuffy the 5th • Thorn Weed • Tooty Kamen • Treasure Pest
Mini-Games	Lotsa Dots • Zappy Path • Traced Memories • Trash It • Roach Smash • Trick Slider • Wario's Ladder • Color me Happy