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Lawn Diseases

Weedy Grasses commonly found within lawns here in the Eastern Nebraska region.

Rust Disease

Rust Disease favors warm and humid conditions and develops most frequently on grasses subject to drought-stress conditions, low nitrogen fertility and shade. Low mowing heights, particularly on Kentucky bluegrass, also increase the susceptibility of grasses to rust. The disease first … Read more

Pythium Blight

Pythium Blight appears as small, usually irregularly-shaped spots 2 to 10 inches in diameter. The grass blades have a water-soaked appearance, and the diseased areas feel and look greasy or slimy. Upon drying, these killed areas of turf turn light … Read more

Necrotic Ring Spot Disease

Necrotic ring spot frequently occurs on two to five-year-old sodded lawns and is especially prevalent in vigorously growing lawns. These lawns often develop a thick thatch layer, which stimulates fungal growth. Necrotic ring spot is also common in lawns that … Read more

Leaf Spot Disease

Leaf spots are most destructive during cold, wet, overcast weather in spring and fall. Look for gradual browning and thinning of grass. Small, dark-brown, purplish, or purplish-red colored spots appear on the leaves from the early spring to late fall. … Read more

Fairy Ring

Fairy Ring—is caused by a number of species of mushroom-forming fungi. Visible signs of fairy ring disease are circular or semi-circular rings, usually darker in color than that of the surrounding turf grass, which form in the turf and may … Read more

Dollar Spot Disease

Dollar Spot Disease name comes from the silver-dollar sized straw-colored spots this disease causes on putting greens. On longer grass, the shapes are more irregular. When dew is on the grass, look for white cob-webby fungus. Blades of grass show … Read more