Pigweed

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Image from NY State IPM Program at Cornell University under the CC by 2.0 license

Names

Amaranthus retroflexus, amaranth

Description

Annual that grows 30-150 cm. Stem is red and usually hairy with many branches. Leaves are oval and alternate. Flowers greenish and grow in dense bracts. Fruit is a small, shiny, black seed.

Image from Dave Richardson under the CC by 2.0 license

Concern level

Only during drought conditions, unpalatable. Can be incorporated into hay.

Toxic Parts

Leaves and stems.

Image from NY State IPM Program at Cornell University under the CC by 2.0 license

Symptoms

Tremors, lack of coordination, abortion of fetus in pregnant mares, knuckling of fetlock joints, coma, death.

Danger

Contains oxalates and nitrates which increase potassium levels, and cause kidney failure. Can be fatal.

Image from Dave Richardson under the CC by 4.0 license

More Information

USDA

*It should be noted that we are not veterinarians. This information is written specifically for horses and should be used for reference purposes only. If you think your horse has eaten something toxic call your vet right away.

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