Disease & Fungus Control
Diagnosis-first treatment for the diseases that hit Southern lawns in our humidity. Prevention when it matters, curative when it’s already there.
Most “lawn problems” in the Pee Dee are actually disease
Brown patches in your Bermuda. Yellow rings in your Centipede. Thin spots in your Zoysia that won’t fill back in.
The instinct is to assume it’s something you did, or that the lawn needs more water and more fertilizer. Most of the time, it’s disease. Pee Dee humidity, combined with our warm nights and wet summers, creates ideal conditions for fungal pathogens that live in the soil and thatch year-round. They’re waiting for the right weather. When they get it, they spread fast.
Good disease control starts with diagnosis. Then we treat what’s actually there, not what we guess it might be.
How we handle lawn disease
Different diseases need different products and different timing. The right approach is to identify the disease first, treat it with the right active ingredient, and address the underlying conditions that let it take hold.
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Diagnosis before treatment
We look at the lawn before we treat. Pattern of the damage, color of the affected blades, time of year, recent weather, and grass type all point to specific diseases. Brown patch looks different from large patch. Dollar spot looks different from gray leaf spot. The diagnosis determines the treatment.
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Preventative applications in high-risk windows
Some diseases are predictable. Large patch hits Centipede, Zoysia, and St. Augustine in spring and fall when soil temperatures cool into the 70s. Brown patch hits in mid-summer when nighttime temperatures stay above 70°F with high humidity. For lawns with a history of disease or grass types that are particularly susceptible, preventative fungicide applications in those windows can stop disease before it shows up.
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Curative treatment when disease is already active
If disease is already visible, we use targeted curative fungicides with the right active ingredient for what's actually growing. We also look at the conditions that allowed the disease to take hold — drainage, mowing height, watering schedule, thatch buildup. Treatment without addressing the conditions usually means the disease comes back.
Every disease control program includes
No surprises and no upsells in the field. Here’s exactly what comes with a disease control program from Pee Dee Turf LLC
- On-site diagnosis of disease symptoms and affected areas
- Preventative fungicide applications during high-risk windows
- Curative treatment with the right active ingredient for the disease
- Cultural recommendations (watering, mowing, drainage) to reduce future risk
- Follow-up monitoring after treatment
When we treat
Disease pressure follows the seasons, but the specific diseases depend on your grass type. Generally:
We don’t apply fungicides on a fixed schedule. Over-application creates resistance and costs you money for treatments you don’t need. We treat when the conditions and the lawn tell us it’s time.
- Spring watch
Late spring
Watch for large patch in Centipede, Zoysia, and St. Augustine as soil temperatures warm into the 60s.
- Heat risk
Early to mid-summer
Brown patch starts becoming a risk in tall fescue and St. Augustine when nights warm up and humidity stays high.
- Peak season
Mid to late summer
Peak disease season across all grass types. Gray leaf spot, dollar spot, and take-all root rot.
- Fall watch
Early fall
Large patch returns in warm-season grasses as temperatures cool back into the 60s and 70s.
- Curative
Throughout the year
Curative treatment whenever disease is actively spreading.
Why this matters for Pee Dee lawns
Our summers are the perfect storm for turf disease. Warm days. Warm nights. High humidity. Frequent thunderstorms. Combined with sandy soils that hold moisture in certain spots and stressed grass that’s already fighting heat, disease pressure here is higher than in drier or cooler parts of the state.
The diseases that hit our lawns hardest are brown patch, large patch, dollar spot, gray leaf spot, and take-all root rot. None of them respond well to guessing. Diagnosis first, then treatment.
Seeing spots, rings, or thin patches in your lawn?
Request a free consultation. Lee will come out, look at what’s happening, identify the disease, and put together a plan to treat it.
Have questions first? Check our FAQ page.