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Natural Awakenings Milwaukee Magazine

The Greener Guide to Understanding Lawn Fungus Among Us

Aug 30, 2024 12:00AM ● By Patti Beres
This year’s unusually high rainfall has heightened lawn and garden fungal diseases. Here’s what homeowners might encounter, particularly in newly established or older lawns weakened by chemical use:

Top 5 Common Fungi in Lawn and Garden


Brown Patch: Circular patches that flare up in hot, humid conditions.

Dollar Spot: Silver-dollar-sized spots indicating nutrient deficiencies.

Leaf Spot: Dark, water-soaked spots on leaves leading to thin turf.

Rust Disease: Orange-red spores that dust off, weakening grass blades.

Ascochyta: Causes large, straw-colored patches during high-stress periods.

Avoid pre-treating with fungicides to prevent resistance and unnecessary expenses. Instead, problems should be treated as they appear with targeted post-treatment. Aerating and overseeding to introduce robust grass strains can enhance lawn health and disease resistance.

By understanding and managing these fungi, you cultivate a healthier, more sustainable lawn that enriches your outdoor living space.

 Patti Beres is the owner of Be Green Pro LLC in Delafield. For more information, call 262-361-4034 or visit BeGreen.pro.