field of soybeans with pigweed
U of A CES Pasture Weed Control Database

Pasture Weed Control Database

The Pasture Weed Control Database contains the same information and pictures included in the Miscellaneous Publication MP-522. The weeds are arranged alphabetically by scientific name because common names vary. For example, in Arkansas, Eupatorium capillifolium, is variously called, Dogfennel, Cypress Weed, and Texas Cedar.
Bitterweed, Helenium amarum
Helenium amarum
This weed is an indicator of poor soil fertility and weak, thin pastures. Spray Bitterweed before it flowers. Bitterweed is readily controlled with 2,4-D amine at 1 to 2 pt/A applied in May or early June. Cimarron Plus, metsulfuron 60 DF, Grazon P+D, GrazonNext HL and Dicamba + 2,4-D also control Bitterweed.