palmer amaranth1-small.jpg

Pigweed, Palmer

Other names: Palmer amaranth; carelessweed
Life cycle: Summer annual
Found in: Throughout the southern U.S.
General description: Erect plant, with panicles of small green flowers that can grow up to 6½ feet high.
Seedlings: Cotyledons are narrow and green to reddish in color. Hypocotyls are usually hairless and red.
True leaves: Alternate, hairless, lance- or egg-shaped and 2" to 8" long with white veins on the underside.
Flowers and fruit: Flowers are small green and spiked and occur in compact clusters along a panicle that is 6" to 18" long. Fruit is a single-seeded bladder that is small, wrinkles when dry and splits open in the middle.

Special note: Exhibits glyphosate resistance.

Similar Weeds
Similar Weeds

Ask an Agronomist

The material and content contained in the Greenbook label database is for general use information only. Agworld and Greenbook do not provide any guarantee or assurance that the information obtained through this service is accurate, current or correct, and are therefore not liable for any loss resulting, directly or indirectly, from reliance upon this service. This label database does not replace the official manufacture issued label. Users of this database must read and follow the actual product label affixed to the container before use of the product.