Managing Puffball Mushrooms in the Lawn

Golf-ball-sized growths that release powdery spores when stepped on are almost certainly puffball mushrooms. While unsightly, they're not poisonous and indicate active fungal decomposition of organic matter in your soil.

Cultural Management

• Deep core aeration improves drainage and oxygen flow, discouraging fungal fruiting.
• Light nitrogen fertilization (standard lawn rate) promotes vigorous grass that outcompetes fungi.
• Dethatch if a thick layer of dead organic material exists — this is the fungi's food source.

Realistic Expectations

Complete prevention is nearly impossible because spores travel on wind from miles away. The fungi feed on buried decaying wood, roots, or construction debris. Focus on maintaining dense, healthy turf — the best long-term suppression. Unless the mushrooms are damaging grass (rare), they're primarily a cosmetic concern.