University of Arkansas Division of Agriculture Cooperative Extension Service
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Weed Identification

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.

Pennsylvania Smartweed, Polygonum pennsylvanicum
Polygonum pennsylvanicum
The key to Smartweed control is treating early before the weeds become too well established. GrazonNext HL or Grazon P+D are effective on this weeds less than 12 inches tall. As the weeds get older, the percent of control declines. Chaparral at 2.5 ounces per acre is also effective.
John Boyd

Specialist: John Boyd
2301 S University Ave
Little Rock, AR 72204-4940
Phone: 501-671-2224
FAX: 501-671-2297