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Summer Fungus in Hybrid Bermuda Lawns

Summer Fungus in Hybrid Bermuda Lawns
By BES-TEX Supply  4512 Adobe Dr. San Angelo, TX 325.653.1300 

Hot days, humid nights, and regular watering perfect for hybrid Bermuda and summer lawn diseases. One of the most common in our area is Brown Patch (Rhizoctonia solani), but Pythium Blight and Leaf Spot can show up too.

๐Ÿ‘€ How to Spot It

  • Brown Patch: Circular, tan/brown patches that seem to grow overnight. Often has a darker ring around the edge.

  • Pythium Blight: Slimy, matted turf in the early morning. Looks greasy.

  • Leaf Spot: Small, purplish spots on blades that lead to thinning turf.

โœ… What Causes It?

  • Nighttime watering or daily irrigation

  • High humidity or overwatering

  • Compacted soil with poor drainage

  • Too much nitrogen during hot weather

Let’s clarify: Overfertilizing means applying too much nitrogen in a single application. For example, 16-8-8 at 6.25 lbs/1,000 sq ft gives you 1 lb of nitrogen that’s a safe, effective rate every two weeks. But doubling that to 12.5 lbs/1,000 means 2 lbs of nitrogen at once and that’s when fungus problems start. Bermuda lawns still need 6+ lbs of nitrogen per year, but apply it gradually.

๐Ÿ›ก๏ธ Prevention Tips

  • Water early morning only

  • Mow with sharp blades at 1.5–2 inches

  • Avoid high-nitrogen fertilizer in peak heat

  • Improve airflow (prune nearby trees or shrubs)

๐Ÿงช Products That Help

1. Heritage G (Azoxystrobin)

  • Mode of Action: Prevents fungal respiration, stopping disease before it spreads

  • Use: Granular, apply monthly as a preventative

2. Pillar G (Triadimefon + Trifloxystrobin)

  • Mode of Action: Dual-actio one stops fungal growth, the other prevents spore production

  • Use: Great for active infections fast knockdown

3. Armada 50 WDG (Trifloxystrobin + Tebuconazole)

  • Mode of Action: Systemic and contact gives curative and preventive punch

  • Use: Mix and spray, rotate with other fungicides to reduce resistance

4. Propiconazole (Banner Maxx)

  • Mode of Action: Inhibits fungal cell membrane production, stopping the fungus from growing

  • Use: Great for long-lasting control applied every 2-4 weeks during the summer months for disease prevention

๐Ÿ› ๏ธ If You Already Have It…

  • Treat infected areas early, before it spreads

  • Use a curative fungicide (like Pillar G or Armada)

  • Avoid watering in the evening

  • Bag clippings to reduce spread

If you're unsure what you're seeing, bring us a picture or a sample. We'll help you ID the problem and recommend the right treatment plan.

BES-TEX Supply has the fungicides, fertilizers, and real-world advice to keep your lawn looking sharp. Questions? Come see us at 4512 Adobe Dr. or call 325.653.1300.