For many people, mowing the lawn is a boring chore that they would rather put off for as long as possible. However, infrequent mowing of the grass can lead to problems such as an invasion of weeds and poor root development. Too-frequent mowing can lead to thatch buildup, fungal diseases and an invasion of pests. Here are some tips on getting the frequency of mowing just right based on the type of grass, the season of the year and the growing conditions.
General Tips for the Mowing of All Grasses
No matter what type of grass grows in your lawn, you should allow newly planted grass seed to mature before you mow it. This practice affords ideal growth for the root system. Strong roots give the grass better resistance against drought and pests. Good development of grass roots also reduces the ability of weeds and pests to invade the lawn. Be sure to maintain the blades of your lawnmower. A clean, even cut reduces damage to the blades of grass. Cell wall damage of the grass could allow fungal and other diseases to affect the lawn's vigor.
Cool-Season Grasses
If your home is located in a place with cool-to-moderate summers, it is best to grow cool-season grasses. These grasses include ryegrass, rough bluegrass and tall fescue. For the best growth, these should be planted in the spring. These grasses grow quickly in cool to moderate weather. The plants mature by five to eight weeks after seeding, according to Bob Vila. Once the blades reach at least 4 inches in height, it is time for their first mowing. Cut no more than one-half of an inch off the height. During optimal growing conditions, the grass may need to be mowed once or twice per week.
Warm-Season Grasses
Warm-season grasses include Bermuda grass, buffalo grass and centipede grass. They germinate after about two weeks and reach maturity about six to 11 weeks after seeding. These grasses have the fastest rate of growth in warm climates and in warm weather. The warm-season grasses can be mowed more frequently than cool-season grasses because they have an overall faster rate of growth during the summertime. Once the blades are about 3.5-inches tall, you can mow the lawn. Take no more than one-half inch off their height. In warm, humid locations, you may need to mow the lawn twice per week.
Mowing During Slower Growth Periods
Most locations will have a period of time during the autumn months of the year when the rate of grass growth decreases. For most places, this happens when the daytime temperatures drop to about 50 degrees Fahrenheit. When this happens, allow the grass to get taller between mowing. You can allow cool-season grass to reach 4.5 inches and warm-season grass to reach 4 inches before mowing in cool weather. This time of the year is also ideal for adding a long-acting fertilizer.