A perennial plant spreading by seeds or rhizomes, this Colocasia species requires constant immersion in water for their roots to survive. The huge leaves form a complete canopy over the water and may cover very large areas, inhibiting the flow of water where that is desired. All parts of the plant contain oxalic acid and are poisonous when ingested, causing severe pain in the mouth and lips if eaten.
Elimination of standing water will eventually kill this species of plant. Where this cannot be accomplished, such as in roadside drainage ditches, a broadleaf, systemic herbicide will be effective.