DISEASE ID · FUNGAL DISEASE
Gray leaf spot
A fungus that spots St. Augustine blades and can thin out shady, damp parts of the lawn. It likes warm, wet weather.
How to spot it
- Tiny brown to ash-gray spots on the blades
- Spots have purple to brown edges
- Spots grow and turn diamond-shaped
- Bad cases look burned or scorched as the blades wither
- Worst in shady areas that stay damp
Why it shows up
It grows fast when it's warm and wet. Shady spots that stay damp get hit hardest, and evening watering keeps blades wet for hours. Quick-release nitrogen in summer can make it worse on shady lawns.
How we treat it
We'll identify it on a visit and recommend the right fix. It's mostly a lawn-care fix: water early in the morning, bag clippings where it's active, and go easy on quick-release nitrogen in shady areas during summer. If it keeps coming back, a treatment might make sense, and we'll talk through it with you.
What you can do
- Water early in the morning, and only when the lawn needs it. Skip evening watering.
- Bag your clippings where it's active.
- Go easy on summer feeding in shady spots.
WANT IT HANDLED?
Let a licensed applicator take it from here.
Tell us about your lawn. We’ll get back to you with a free quote.
Prefer to talk? 817-382-1722Licensed applicator, Texas Department of Agriculture · License #0984138