Overnight Circular Dead Patches: Red Thread Prime Suspect

NJ, fescue/bluegrass/rye. 6-inch perfect circles of dead grass appear overnight. Roots intact, grass flat. Not grubs. What to do?

Classic Red Thread Signs

• Spring, cool, wet.
• Circular patches, pink/red threads at dawn.
• Grass doesn't pull up (roots alive).

Confirm & Manage

Cornell guide: Red Thread Fact Sheet. Usually grows out with light N and drying weather. Fungicide only if severe.

Red thread is the spring circle-maker. Watch, feed lightly, wait.