Lawn and Turf: Brown blight categories: Lawn and Turf Lawn and Turf Diseases revision date: 2022-10-30 11:08 Brown blightPhoto by: R.S. Byther Biology Brown blight is a fungal disease affecting the leaves of perennial ryegrass and some fine fescues. Infection commonly occurs during cool, wet periods. The disease is typically worse during the first fall […]
Lawn and Turf: Brown patch categories: Lawn and Turf Lawn and Turf Diseases revision date: 2023-04-12 12:00 Brown patchPhoto by: G. Stahnke Biology Brown patch is a fungal disease typically affecting bentgrasses and annual bluegrasses. Infected grass appears as patches a few inches to several feet in diameter. The patches are generally circular and light […]
Lawn and Turf: Curvularia blight (Fading out) categories: Lawn and Turf Lawn and Turf Diseases revision date: 2022-10-30 10:20 Biology Curvularia blight of turfgrass can be caused by eight species of fungi. Infected areas of lawn develop yellow or dappled yellow-green patches 2 to 3 inches in diameter. These patches later turn reddish-brown. The patches […]
Lawn and Turf: Dog injury categories: Lawn and Turf Lawn and Turf Diseases revision date: 2022-10-30 10:11 Dog damage dead patchPhoto by: R.S. Byther Biology Dog injury typically appears on lawns as brown, circular patches a few inches in diameter. These patches may be surrounded in a few days by a ring of darker green, […]
Lawn and Turf: Dollar spot categories: Lawn and Turf Lawn and Turf Diseases revision date: 2023-04-04 12:00 Dollar spotPhoto by: G. Stahnke Biology Several species of fungi can cause fairy rings in lawns. Common symptoms may include a ring of dead grass with darker green grass and mushrooms on the inside and/or the outside of […]
Lawn and Turf: Fairy ring and mushrooms categories: Lawn and Turf Lawn and Turf Diseases revision date: 2022-10-29 12:41 Fairy ring and mushroomsPhoto by: R.S. Byther Biology Several species of fungi can cause fairy rings in lawns. The common symptoms may include a ring of dead grass with darker green grass and mushrooms on the […]
Lawn and Turf: Leaf spot categories: Lawn and Turf Lawn and Turf Diseases revision date: 2022-10-29 12:30 Drechslera leaf spot Photo by: R.S. Byther Biology Fungal diseases of turf caused by Drechslera sp. include leaf spot and melting-out, root, crown, and rhizome rots, and net blotch. Leaf spots first appear as small, water-soaked areas that […]
Lawn and Turf: Microdochium patch (Pink snow mold) categories: Lawn and Turf Lawn and Turf Diseases revision date: 2022-10-29 12:19 Fusarium patchPhoto by: R.S. Byther Biology Fusarium patch is a fungal disease common in western Washington. It is typically most severe on bentgrass and annual bluegrass at low mowing heights in shaded areas. Fescues, Kentucky […]
Lawn and Turf: Moss categories: Lawn and Turf Lawn and Turf Diseases revision date: 2022-10-29 12:10 Moss in lawn.Photo by: G. Stahnke Biology Mosses are small, simple, non-flowering plants. They are typically low-growing and somewhat yellowish-green in color. They grow vigorously in the cool, moist weather of fall, winter, and spring, when lawn grasses are […]
Lawn and Turf: Necrotic ringspot categories: Lawn and Turf Lawn and Turf Diseases revision date: 2022-10-29 10:26 Necrotic ring spotPhoto by: R.S. Byther Biology Necrotic ringspot (NRS) is a fungal disease primarily occurring on Kentucky bluegrass in central and eastern Washington and Oregon. It is most common on 2- to 5-year-old lawns grown from sod. […]