Scientific NameAmaranthus powellii
This erect summer annual flowers from June through October.
The shiny green leaves are arranged in an alternate pattern. The diamond shaped leaves have whitish veins on the lower surface. The stems are stout and hairless.
This plant can be distinguished from other pigweeds by its more pointed leaves. The plant also has fewer branches and longer bracts.
Flower Seed Head
The small greenish flowers occur on a stiff terminal stalk. Female and male flowers occur on different parts of the plant, with the male flowers being on the terminal spike, and female flowers occurring in smaller spikes from the leaf axils.
The seeds develop in a utricle that can grow up to 2 mm in length. Each utricle contains one glossy black, ovate seed.
This plant prefers disturbed ground, and can be found in croplands.
upright and nonwoody
Thorns or Spines
Approximate Flower Diameter
Dominant Flower Color
longer than leaf
Stem Cross Section
round or oval