• Smooth Crabgrass

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

• Creeping Bentgrass

  Creeping bentgrass is a spreading cool-season perennial grass that is commonly used for golf course greens, tees and fairways. Like other grasses, bentgrass can be considered a weed when it is present in another species.

• Smut

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

• Corn Speedwell

  Corn speedwell is an upright, clumping winter annual that produces small purple flowers in the spring. The lower, non-flower, portion of the plant has leaves that are round-to-oblong with rounded teeth on the margin in an opposite arrangement.

• Heal All

  Heal All is a low growing, spreading, perennial of the mint family. It has very distinctive 'puckered' leaves with an opposite arrangement on square stems.

• Prostrate Knotweed

  Prostrate knotweed is a supreme indicator weed. Knotweed is the earliest germinating of all the summer annual weeds. Due to its early germination timing, knotweed is able to claim resources and invade damaged areas before other desirable grasses begin to grow.

• Red Thread

  Red thread is a disease of slow growing turf. Red thread is easily recognized by the red to coral-pink fungal strands (stromata) produced on leaf blades and sheaths.

• 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.

• Large Crabgrass

  Large crabgrass is a common invader of manicured turf. Large crabgrass has hairs on all surfaces. It can be identified by its light green appearance and swollen, zig-zag nodes.

• Common Lambsquarters

  Like many other summer annual broadleaf weeds, common lambsquarters is generally considered an 'establishment weed.' Common lambsquarters needs cultivation (bare, loose soil) to establish.

• Common Chickweed

  Primarily a winter annual, common chickweed is frequently found growing in the mulch skirts of shade trees. In general, common chickweed prefers shaded sites with moist soils. The vegetation forms mounds that are 3-7 inches tall. The delicate white-to-pink flowers appear early in the spring. Plants can persist in protected areas well after flowering.

• Common Milkweed

  Milkweed is easily identified by its upright growth habit and large (entire) leaves. All plant parts will exude a milky white latex when broken.

• 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.

• 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.

• Curly Dock

  Curly dock is a long taprooted simple (non-branching) perennial that grows in a rosette. The 6-8" long elliptical or lance-shaped leaves of curly dock have entire but wavy margins (not toothed). The youngest leaves smooth margins that get progressively more rippled as the leaf matures. The appearance of the mature leaves resembles leaf lettuce (very curly).

• Orange Hawkweed

  Orange hawkweed is a creeping perennial of low maintenance turf, roadsides and native areas. It can be an indicator of low soil fertility or slightly acidic soils. Hawkweed spreads by stolons and rhizomes creating colonies that form patches.

• Henbit

  Henbit is a winter annual that typically invades new seedings and thin turf (prefers nutrient rich soil). As with most winter annual weeds, they are most noticeable in the year of establishment. As turf density increases after renovation, henbit will not persist after the following spring.

• Common Mullein

  Large oblong densely-hairy leaves growing from a rosette in the first year. Leaves have alternate arrangement in second year. Mullein is commonly found in headlands and boundary areas.

• Purple Deadnettle

  Purple deadnettle is a common weed invader of vacant agricultural fields, landscape borders, derelict lawns, and compost piles.

• 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.