When designing a lawn care routine, watering habits are critical. If you water too late in the evening or are watering too much, fungus can creep in easily. Only water your lawn when grass is dry and only until the soil is damp up to an inch deep. Water in the mornings so moisture can evaporate by evening, when fungus is more active.
Mowing your lawn properly is also vital to keeping fungus away. Mower blades need to be sharp so your lawn has crisp, clean edges. Dull blades lead to jagged edges that are perfect for fungus growth. Keep your lawn mowed at least 2 inches high to make it difficult for fungus spores to find ground to plant themselves on.
Every beautiful lawn needs to be fertilized from time to time, but if you over-fertilize your lawn, you inadvertently create ideal conditions for fungus growth. Nutrients in the fertilizer encourage fungal growth as well as lawn growth. Apply as little fertilizer as possible to keep your lawn green, so any fungus lurking in the soil won't take over your lawn.
Unfortunately, despite taking as many antifungal measures as possible, fungus can still persist. If you see a discolored patch, ring-like structures on your lawn or fungal structures popping up, you may need to call in a professional. Antifungal chemical treatments are quite toxic and potentially damaging to grass.