White Fungal Spores on Marathon Sod in Hot Climate

White clumps releasing black dust (spores) on Marathon sod in Escondido, CA indicate a fungus. Caused by improper watering: daily light watering, especially evening, keeps blades wet and promotes fungal growth.

Fix: Water early morning (4–6 AM) so turf dries by night. Apply 1+ inch per session, deeply. Avoid evening watering. Mushrooms may signal acidic soil; apply turf lime to raise pH toward neutral.

Consult local nursery for fungicide if needed, but cultural correction (timing, depth) is primary.