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  • Turf

    MSU Extension’s focus on turfgrass management brings together faculty, specialists, and educators who work with both professional turfgrass managers and homeowners in managing turfgrass in an environmentally responsible manner.


  • Mouseear Chickweed

    Mouseear chickweed is a low-growing perennial that can tolerate extremely low mowing heights (even at greens height). It can tolerate a wide variety of soil and growing conditions. The leaves of mouseear chickweed are typically very thick, dark green and covered with hairs.

  • Gray Snow Mold

    This disease is important in northern regions of the United States, where snow cover remains on the ground for extended periods, usually 3 months or more.

  • Prostrate Pigweed

    Prostrate pigweed is a native mat-forming summer annual weed that invades thin, damaged or under-fertilized lawns. It is common in areas with disturbed soils or neglected areas. Prostrate pigweed lacks the hairs common to redroot pigweed and has smooth leaves.

  • Creeping Speedwell

    Creeping speedwell is a low growing perennial that prefers shade, moist soils, good fertility and a low mowing height.

  • Canada Thistle

    Canada thistle is a creeping perennial that always colonizes in patches. Plants can reach 1-3 feet high. Canada thistle has an extremely well developed creeping root system that can grow several feet deep.

  • Common Purslane

    Common purslane is a mat-forming summer annual that thrives in all soil types. Common purslane has multi-branched red stems with thick fleshy leaves that cluster at the end of the branches.

  • Broadleaf Plantain

    Broadleaf plantain is probably the second most common broadleaf weed of turf after dandelion. It is extremely well adapted to most sites including dry or wet conditions, heavy soils and very low mowing heights.

  • Wild Strawberry

    Wild strawberry is a trifoliate (three leaflets) weed that spreads by aggressive stolons. The leaves and fruit of wild strawberry are smaller than that of its cultivated cousin. Wild strawberry is usually found in low maintenance areas and prefers well-drained soils.

  • Germander Speedwell

    Speedwell is often used as an ornamental ground cover and is commonly available at retail greenhouses. Germander speedwell is a perennial that has simple, opposite narrow leaves near the base that are slightly elongated.

  • Summer Patch

    Summer patch first appears in the warm weather of summer as yellow to bronze-colored, irregular-shaped patches ranging from 6 in. to 3 ft (15.3 cm to 1 m) in diameter.

  • Smooth Crabgrass

    Smooth crabgrass is the most common summer annual grass problem in managed turf.

  • Bacterial Wilt

    Bacterial wilt is characterized by tiny red-copper-colored spots first appearing about the size of a dime. As more plants die, spots become larger. Small, yellow leaf spots, streaked tan to dark brown spots, dark green, water soaked lesions, shriveled blue to dark green leaves, and yellow elongated leaves are all symptoms that have been associated with bacterial wilt.

  • Creeping Woodsorrel

    Creeping woodsorrel is a spreading perennial weed with a reddish-purple color that frequently roots at the nodes.

  • Pythium Blight

    Pythium first appears as circular reddish brown spots in the turf, ranging in diameter from 1 to 6 in. In the morning dew, infected leaf blades appear water soaked and dark and may feel slimy.

  • Chicory

    Chicory is a simple (unbranched) perennial with a jagged fleshy taproot. The coarsely-toothed basal leaves are 6-8" long and form a rosette.

  • Redroot Pigweed

    Redroot pigweed is a summer annual broadleaf weed that is typically associated with new establishments and other areas of disturbed soil (compost piles, gardens).

  • Prostrate Spurge

    Prostrate spurge is a late-germinating, low growing, mat-producing summer annual. Spurge is very often found in un-irrigated bark mulch common to parking lot tree islands, crevices and boulevards.

  • Yellow Nutsedge

    Yellow nutsedge is a persistent perennial weed of poorly drained soils. Yellow nutsedge is grass-like in its appearance with parallel leaf veination. The stem of nutsedge is triangular with leaves coming off each corner (three-ranked).

  • Smut

    The smut diseases are important on many Kentucky bluegrass cultivars and higher cut turfgrass.

  • Nimblewill

    Nimblewill is a warm-season turfgrass that will infest cool-season turf. It has excellent winter hardiness which allows it to establish and compete.