University of Maryland Extension

Home and Garden Information Center

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Green June Beetle - Lawns

Back to Common Problems - Lawns The green June beetle is one of the white grubs that may be found in lawns. This grub is unlike other grubs in that it will crawl on the surface of the grass at night. Other white grubs remain in the soil and feed on the turfgrass roots. The adult beetle is ¾ - 1...

Chinch Bug - Lawn

Back to Common Problems - Lawns Chinch Bugs Chinch bugs are small insects (about 1/8 inch when mature) with piercing-sucking mouthparts that feed on the sap of grass plants. They are found in the thatch area of turfgrass and feed on the lower leaf sheath and crown area of the plants. There are 3...

Cicada Killer Wasps - Lawns

Back to Common Problems - Lawns Publication: (PDF) HG 104 - Mining Bees and Ground- Nesting Wasps Cicada killers resemble large yellowjackets. They are mostly black with pale yellow markings on the abdomen and are about 2 inches long. Despite their appearance, these insects are inoffensive and...

Summer Patch - Lawns

Back to Common Problems - Lawns Summer patch causes circular straw-colored patches of grass during the summer. Grasses Affected: · The most commonly infected grasses are Kentucky bluegrass and fine leaf fescue. Primary symptoms: · Initial symptoms on Kentucky bluegrass are roughly circular straw-...

Striped Smut - Lawns

Smut fungi are a very diverse group of fungi that usually attack leaves, leaf sheaths, stems and inflorescences. The most common smuts on turfgrasses are stripe, flag and blister smuts. Of these the most common and damaging is stripe smut. Grasses Affected: · Striped smut is primarily a problem on...

Slime Mold - Lawns

Back to Common Problems - Lawns Slime molds don't cause diseases on turfgrasses but occasionally cause excitement when they suddenly appear as white, gray, or purplish spore masses on the blades. They are not parasitic on grass but feed on other microorganisms, such as other fungi and bacteria, in...

Powdery Mildew - Lawns

Back to Common Problems - Lawns Powdery mildew is a common fungal disease of blue and fescue grasses grown in the shade that causes a white powdery appearance on the blades. Grasses Affected: · Grasses infected typically include Kentucky bluegrass, bermudagrass, fine-leafed fescues and zoysiagrass...

Mushrooms - Lawns

Back to Common Problems - Lawns Various species of mushrooms may appear in lawns after wet weather. A mushroom is the spore-bearing or fruiting structure of a fungus that grows in the soil. The fungus feeds on dead organic matter such as dead tree roots, buried logs, and stumps. These fungi may...

Grasses

The plants below were featured in prior months on the Home and Garden Information Center's Featured Plants. Current selections can be found on the Featured Plants page . Little Bluestem Feather Reed Grass 'Karl Foerster' Fountain Grass 'Karley Rose'

Fairy Rings - Lawns

Back to Common Problems - Lawns Fairy rings are caused by many species of mushroom-forming fungi that cause rings or arcs of dead grass or rings of stimulated grass. These rings are variable in size and are sometimes followed by rings of mushrooms during rainy seasons. · All turfgrasses can be...

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