Mid-Iron Bermuda Burn Spots in Phoenix: Fungus, Grubs & Organic Solutions

Mid-Iron Bermuda? Likely a Hybrid

Ed in Phoenix has "Mid-Iron" Bermuda with burn spots in full sun. Could be brown patch fungus (from buried wood/debris), grubs, or fertilizer burn. No reliable info on "Mid-Iron" variety—treat as standard hybrid Bermuda.

Diagnose: Pull & Dig

• Fungus: Grass pulls easily, roots slimy/short.
• Grubs: Dig 1 sq ft; >5–6 grubs = problem.
• Buried wood: Old roots/lumber rot, steal nitrogen, grow fungus.

Organic Treatments

Fungus: Horticultural corn meal 10–15 lbs/1,000 sq ft.

Grubs: Skip chemicals (timing-critical, temporary). Build soil life: beneficial nematodes, milky spore (apply per label), birds, toads. Healthy soil = natural grub control.

Why Organics Win in Desert Lawns

Chemicals are band-aids. Organic program (sugar, alfalfa, lava sand, corn gluten, deep watering) creates living soil that resists pests, disease, and heat stress. Mow at 3 inches—taller blades survive Phoenix summers.