Eliminating Mushrooms from Mushroom Compost in a Coastal Lawn

Source

Mushroom compost introduced fungal spores. Fruiting bodies appear for 2+ seasons.

Harvest mushrooms before they release spores (major prevention).
Fungicides or iron sulfate (garden center) suppress fruiting.
Reduce nitrogen and moisture: Less fertilizer, deeper/less frequent watering.

Fungi will eventually exhaust the compost's organic matter. Consistent removal speeds the process.

Lawns: Hydroseeding Mystery Material and Shrub Fertilization; Overseeding a Large Mature Lawn: Fertilizer First or Seed First?; Burnt Lawn from Broken Sprinklers: Runner Grasses Recover, Bunch Grasses Need Reseed; Mushroom Half-Circle Killing St. Augustine: Fairy Ring or Fungus?; Condo Lawn All Weeds: Management Won't Act, Chemicals Off-Limits; Going Organic in Boston: What to Expect; Slime Mold or Powdery Mildew on New Sod: Cosmetic, Not Catastrophic; Overwatering Signs in New Sod: Mushrooms and Yellowing; Lawn Mushrooms, Nitrogen Management, and Color Improvement; Mushrooms in New Lawn: Sign of Healthy Soil, Not a Problem

Garden Articles

Plants