Weed Identification and Control

Information on weed identification and control, including catsear, marestail, purple loosestrife, pokeweed, pigweed, poison ivy, crabgrass, hemlock, purslane and multiflora rose. Tips on various herbicides and integrated pest management.

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Nimbleweed actively growing in July
Nimblewill (Muhlenbergia schreberi) - Articles Articles
Nimblewill is a native warm season perennial grass. It is extremely common, especially in older lawns. More
Options for Chemical Control of Moss in Putting Greens
Options for Chemical Control of Moss in Putting Greens - Articles Articles

Options for Chemical Control of Moss in Putting Greens

Peter Landschoot, Ph.D., Joshua Cook

Silvery thread moss (Bryum argenteum) in putting greens is becoming an all-too-common occurrence on Pennsylvania golf courses. More
Photo: Chris Evans, University of Illinois, Bugwood.org, annual sowthistle, Sonchus oleraceus
Annual Sowthistle - Articles Articles

Annual Sowthistle

Tim Abbey

Annual sowthistle (Sonchus olearaceus) is one of the annual thistles. More
Closeup of triangular stem shape, rhizomes, and tubers. Photo: Univ. of Illinois
Yellow Nutsedge Control Starts Now - Articles Articles
A sure sign of summer, yellow nutsedge is showing up in lawn areas. More