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Weed Identification in Nurseries and Landscapes

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Prostate pigweed - Amaranthus blitoides S. Wats.
Weed Identification in Nurseries and Landscapes > Prostrate pigweed
Prostrate pigweed seedling
Prostrate pigweed seedling.
Prostrate pigweed flowers
Prostrate pigweed foliage and flower clusters.
Life cycle: Prostrate, mat-forming summer annual.

Stems: Prostrate and nearly smooth, light green to red-dish stems form thick, circular mats. Stems may be 1 to 3 feet long and mostly erect at the tip.

Leaves: Alternate and pale green to shiny, dark green leaves are oblong, oval to egg-shaped with pointed, rounded to slightly indented leaf tips. Leaf margins are smooth and usually whitish. Leaves are numerous at the stem ends.

Flowers and fruit: Small, greenish flowers are found in dense clusters in the leaf axils. Flowers have bracts as long as the sepals and yield small, round, shiny black seeds.

Reproduction: Seeds.
Prostrate pigweed stem
Prostrate stem and shiny green foliage of prostrate pigweed.
 
The MSU IPM Program maintains this site as an access point to pest management information at MSU. The IPM Program is administered within the Department of Entomology, fueled by research from the Michigan Agricultural Experiment Station, delivered to citizens through MSU Extension, and proud to be a part of Project GREEEN.
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Updated: 10/18/07