Gordon's 1 gal. Amine 400 2 4 D Weed Killer at Tractor Supply Co This beautiful elephant ear is pretty unique because it's literally running away! It's called Colocasia Black Stem or 'Fontanesii'. It reproduces by producing runners called stolons that shoot from underground and A New Era in Herbicide Tolerant Crops Development by Targeted Genome Editing ACS Agricultural Science & Technology Harpoon Granular Aquatic Herbicide 40 lbs. bag : Pond Water Treatment Supplies : Pond Supplies & Equipment Vinegar Weed Killer (20%)