Powdery Mildew on New Lawn: Ignore It, It'll Pass

Fall-seeded lawn. Spring powdery mildew, no shade, moderate rain, poor soil. Planning weed/feed this weekend—hold off?

Powdery Mildew Is Cosmetic

White dust on blades. Doesn't kill grass. Runs course in 2–3 weeks as weather dries/warms. No lasting damage.

Don't Treat, Don't Worry

• Fungicides unnecessary.
• Weed/feed okay if labeled for your grass—but mildew isn't why.
• Improve air flow (prune), morning water, balanced N.

It's ugly, not fatal. Let it go.