Other names: Common waterhemp, tall waterhemp
Life cycle: Summer annual
Found in: Cultivated fields, stream banks and waste areas in the eastern and central U.S.
General description: Tall plant (up to 9 feet high) with brightly colored red or green stems and spiky flowers.
Seedlings: Seedling leaves are oar-shaped. First true leaves are lanceolate with a notch at the tip.
True leaves: Alternate, oval or lanceolate, hairless and waxy.
Flowers and fruit: Flowers are green to dark pink with densely packed spikes. Fruit is seeds that are black or dark red.
Special note: Exhibits glyphosate resistance.