Why Fungicide Before Sod Installation Is Counterproductive

Applying fungicide to soil before sodding destroys beneficial fungi that protect grass from pathogens. Healthy soil food webs—diverse fungi, bacteria, nematodes—compete with and suppress disease organisms naturally.

Fungicides kill indiscriminately. Without beneficial microbes, pathogenic fungi explode unchecked. Research (MIT, Cornell, Stanford) confirms: sterile soil + sod + fertilizer = disease magnet.

Integrated Pest Management (IPM) uses biological controls, resistant varieties, and cultural practices—pesticides only as last resort. Earthworms, critical for soil fertility, are highly sensitive to fungicides.

Most soil fungi are beneficial. Don't sterilize—build biology with compost, proper watering, and organic fertility. No fungicide needed for healthy sod establishment.