Dull blades shred leaf tips, making your lawn both unattractive and less resistant to stresses and pests. Improper fertilizing . Overwatering also fosters lawn diseases, weed seed germination and thatch buildup. Insect and disease injury . Pests thin turf.
Weeds soon follow.
Thick thatch . If less than a half inch thick, it s rarely a problem. In turn, those lawns will send more and more roots into thatch, rather than soil. Over time, the lawns will deteriorate as shallow roots make them vulnerable to invaders and sensitive to heat, cold and drought. The thatch also may reduce the impact of any soil-applied weed and insect controls.