Is a sharp lawnmower blade important?
A sharp mower blade is very important. A dull mower blade rips and tears the grass blades. This increases plant injury. The ragged edges serve as ideal entry point for various diseases because they do not heal as well or as quickly. This is especially visible in hot weather when the tips dry out and turn brown. Depending on how frequent you mow your lawn you may need to sharpen your mower blade 1–2 times during the season.