Summer Lawn Tips

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If spring lawn care is about getting your lawn healthy and green, summer lawn care is about keeping it healthy while temperatures soar and rainfall becomes a fleeting memory. It’s also about maintaining a lawn that can withstand all the barbecues, games, parties, and running feet that summer has to offer. Here are some tips for keeping your lawn in shape over those long, hot days of summer.

After the spring growing season, summer brings quite a bit of stress to lawn grasses. Not only are the heat and drought damaging, but we aren’t as forgiving in the summer as we are in the winter. We want our lawns lush and green for outdoor activities, and we try to fight nature by continuing to fertilize, water, and coax new growth out of our lawns no matter what the weather. However, by understanding and respecting the seasonal changes of turf grasses, you can take steps to care gently for your lawn as the mercury rises.

Once temperatures get into the 80s and above, lawns will begin to struggle a little, with cool-season grasses having the hardest time. Growth will slow, color may fade, and lawns will show signs of wear and tear as they are less able to recover from stress and traffic. Some cool-season lawns will even go dormant in the summer, looking brown and brittle until early fall.

Lawns need at least one inch of water per week, and more when the heat is severe. Use a rain gauge or straight-sided can to keep track of the amount of water received from rainfall and irrigation.

Water deeply and less frequently to encourage drought-tolerant roots.

Water early in the day to reduce evaporation and fungal growth.

Either water your lawn regularly and deeply, or don’t water at all. Don’t let your lawn go brown and dormant, then try to “water it back to life.” If your lawn goes dormant in summer, it should stay that way until fall – don’t worry, it should recover once the weather changes.

Raise your mower blade in the summer. Taller grass is more drought-tolerant, grows deeper roots, and helps shade the earth to prevent weed seeds from germinating. Cool-season grasses should be mowed at 3”- 4” during the summer, or as high as your blade will go, while warm-season grasses should be mowed at 2”- 3”.

Mow regularly, to prevent cutting more than 1/3 of the grass blade at a time. This keeps your grass healthier and prevents the clippings from smothering the grass.

Keep mower blades sharp. Make sure your mower is cutting your grass, not tearing it, to minimize stress during hot temperatures.

If your lawn is looking straggly in midsummer, resist the urge to fertilize. In fact, it’s best to stop fertilizing about 30 days before your area’s summer temperatures arrive. Applying extra fertilizer in the heat of summer can burn your lawn and create a flush of tender growth that will struggle in the hot summer weather. Never fertilize dormant lawns – wait until they green up in the fall.

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