Fall Lime-Green Patches in Acid Soil: Not Sulfur, Not Iron

Fall patches of lime green in grass. Soil very acid. Need sulfur or iron?

Acid Soil + Iron = Toxicity (Brown/Rust), Not Lime Green

Iron toxicity shows as bronzing from inside leaf—won't rub off.

Lime Green Patches = Different Issue

• Nutrient imbalance (maybe potassium?).
• Variety difference (mixed grass types).
• Localized drainage.

Soil test with tissue analysis. Don't guess amendments.