Identification
Symptoms
- Dark green to black slick surface growth
- Thin, wet, sealed turf surface
- Often tied to saturated, compacted, shaded turf
- Season
- Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
- Regions
- Pacific Northwest, Northeast, Midwest, South
- Turf Hosts
- Annual Bluegrass, Bentgrass
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This is identification help, not a diagnosis.
Symptoms described here can overlap between diseases and other causes (drought, wear,
nutrient deficiency). When you're not sure, or before applying any treatment, contact
your state's Cooperative Extension office - most offer free or low-cost diagnosis and
know your local conditions best.