The heat leaves your grass 'stressed' and cutting it too often or too short can make this worse. If you do mow, try doing so a day or so after it rains, when your grass is likely to be happier.
AVOID MOWING DURING EXTREME HEAT When your lawn is particularly stressed from heat or drought, it can be limited in its ability to recover from mowing and can be damaged even more. Instead, mow the grass after a rainfall or after irrigation day.
Mower Height
A mowing height between 2.5 to 3 inches is best for most of the season, except during summer stresses when the lawn mowing height should be raised one-half inch to mow at 3 to 3.5 inches. Raising the mowing height provides more insulation from summer heat and reduces water loss from your soil.
The ideal temperatures to mow are between 50 to 80 degrees Fahrenheit. Does grass stop growing at a certain height? Once temperatures have become consistently warmer, it is a good idea to follow the one-third rule, which means to never clip off more than one-third of the grass' current height in one mowing session.
However, when the weather is hot and generally dry, you'll be safe to mow either every 5 or 6 days. Ultimately, during the summer, you should expect to almost never wait a whole week to mow your lawn. Waiting too long to mow your lawn can overwork and damage older mowers — learn about our lawn mower repair service.
So, what's the best time of day to mow a lawn in hot weather? Plan to mow your lawn during the evening hours, after the heat of the day has passed. The temperature should be between 40°F and 80°F.
If the grass is too wet, you shouldn't mow and if it's too dry you shouldn't either. Remember, mowing is a stressful event for your lawn. If you mow when it's already under stress, such as during dry spell or drought, then it will become even more stressed. You don't like to be stressed and neither does your poor lawn.
For this reason, some people prefer to mow at 3 or 3.5 inches. For the healthiest and most sustainable approach, Michigan State University Extension says 3.5 to 4 inches is most desirable. Lawns mowed at 3.5 or 4 inches out-compete weeds, tolerate grubs and look just as good as lawns mowed at 2.5 inches.
Can You Water Grass After Mowing? Yes, you can water grass after mowing, however it is healthy to water it but only if it requires it. Watering will help the mowed blades perk up and survive being cut better. Take care not to water a lawn overwatered or from noon till late into the night.
Mowing actually helps make your grass grow thicker because the tip of each blade contains hormones that suppress horizontal growth. When you cut the lawn, you remove these tips allowing the grass to spread and grow thicker near the roots.
Most noxious weeds grow low to the ground after long-term repeated mowing. In these cases, periodic control through herbicides can remove plants that have acclimated to frequent mowing. Mowing will not eradicate noxious weeds. However, it can stress weeds, providing desired plants a competitive edge.
Cool-season grasses should typically be cut to about 3 to 4 inches high. Warm-season grasses should typically be cut to about 2 to 2 ½ inches high. The common cool-season grasses include fine and tall fescue grass, Kentucky bluegrass, and perennial ryegrass.
Longer grass reduces the amount of weeds.
The extra shade given off by long blades of grass helps prevent light from reaching weeds and crabgrass. Without light, the unwanted weeds can't germinate, and you won't have to put up with them taking root in your beautiful lawn.
Mowing every two weeks — instead of weekly — and not dousing grass with chemical herbicides and fertilizers, helps the environment and supports the health of bees, which are among the world's most important pollinators.
Perform the first grass cut of the year in spring, around mid-March. From there on, mow the lawn at least once every week. Try to keep your grass' height the same all throughout spring. For most lawns the ideal height would be 2.5-4cm (1-1.5in).
No Mow May was first popularized by Plantlife, an organization based in the United Kingdom, but is now gaining traction across North America. The goal of No Mow May is to pause mowing during the month of May, allowing flowers to bloom in your lawn to help early season pollinators.
Highlights. Avoid watering grass on a hot afternoon when it's 95 degrees or higher. The best time to water grass is at dawn or in the early evening. Water deeply three times a week instead of a little water daily.
As the heat starts to put stress on your lawn you may notice full brown blades of grass or grass with brown tips. They may have begun to curl.
Grass can turn brown and go dormant when it's stressed by drought, heat, or both. It's your lawn's way of conserving energy and water, Mann explains. The grass will break dormancy and begin growing again when the temperatures and/or rainfall levels become more ideal for it.
Most lawns need to be watered no more than three days a week in the spring as well as in the summer and two days a week in the fall. This watering schedule is recommended under normal water supply conditions.
It depends on the type of grass. Kentucky bluegrass has runners that help it spread on its own. But many northern grasses are bunch-type grasses which don't spread, so seeding is needed to fill in bare spots. Perennial ryegrass and fescue are among the non-spreaders.
Mowing your lawn when it is extra-long is a surefire way to get nice, big clumps of grass across the lawn. Cutting too much grass at once is often too many clippings for a lawn mower to handle, no matter how good of a machine it is. So instead, mow more often! Avoid letting the lawn grow too much between mowing.