Snow mold in spring—rake, recover, and reseed smart
Pink and gray snow mold after snow melt: how to spot damage, rake gently, improve airflow, and reseed thin spots—without expecting an instant perfect lawn.
Snow mold shows up where snow lingered on grass—often along drift lines, shaded edges, or north-facing patches. Two common types are gray snow mold (Typhula) and pink snow mold (Microdochium). Both can leave matted, bleached, or discolored turf as snow melts.
What you are seeing
- Circular or irregular patches of flattened, crusty grass.
- Cottony or webby growth in cool, wet weather (more typical of gray snow mold).
- Pinkish cast when active—often associated with pink snow mold.
Identification from photos alone is imperfect; if patches are severe or spreading in warm weather, your local extension office can help narrow it down.
Recovery steps after melt
- Let the area dry when possible; avoid walking through saturated patches repeatedly.
- Rake lightly to break matted blades and help sunlight and air reach the crown. You are not scalping—just unsticking the turf.
- Bag or remove heavy debris if thatch is thick and holding moisture; compost off-site if your municipality allows diseased clippings.
- Avoid heavy nitrogen until you see how much live grass remains. A stressed lawn does not need a shock of fast growth.
When to reseed
If crowns are dead and soil shows through, plan reseeding with a species mix suited to your site and season. For cool-season lawns, spring seeding can work but competes with summer annual weeds—your tradeoff depends on region and weed pressure. Patch repair may mean loosening soil, seed, light topdress, and consistent light watering until establishment.
Ongoing prevention ideas
- Avoid excessive late-fall nitrogen that pushes lush growth under early snow.
- Continue mowing until growth stops in fall at a height appropriate for your grass.
- Improve drainage where puddles form; snow mold loves prolonged wet cover.
Snow mold recovery is gradual. Note what you did and how the patch responds over weeks—Lawn Care Journal on iPhone and iPad can hold those entries and photos per lawn. Browse more topics on the articles index. For help with the app, visit Support.