18 Things You Should Never Do to Your Lawn
Whether you have a green thumb or not, it’s easy to maintain a blissful, barefoot-worthy backyard. For starters, avoid these no-nos.
Don’t remove grass clippings
Leaving grass clippings on the lawn after you mow can cause thatch problems, right? Nope! That’s a myth. Turns out, grass clippings can actually help with the overall health of your lawn. And (bonus!) that means less work for you when you mow.
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Don’t skip aerating
Most lawns, whether seeded or sodded, are planted over a fairly skimpy layer of topsoil. Over time, lawn mowers, pets, and pick-up football games compact the soil, making it difficult for air, water, and vital nutrients to penetrate to the grassroots. Your challenge: to restore healthy soil conditions that nurture your lawn. To loosen and aerate the soil, rent a power core aerator. They’re available at rental centres, plus some hardware stores and garden centres.
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Don’t use a dull mower blade
Dull mower blades rip through the grass blades instead of slicing them cleanly, and that stresses the plant. You can always tell a lawn that’s been mowed with a dull blade because it looks brown on the top. Get on your hands and knees and you can actually see the damage. Be sure to sharpen your mower blade each season to keep your lawn in good shape.
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Don’t water every day
Did you know your lawn can actually get dependent and needy if it has too much water? Instead of watering every day for 15 minutes, choose one day a week to water the lawn for an entire hour. Your lawn will be watered deeply, and it will be healthier and more drought-tolerant.
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Don’t forget to dethatch
Thatch is a layer of slowly decomposing grass stems, roots, clippings, and debris that accumulate at the soil surface over time. It can build up in your lawn and virtually choke it to death. Excessive thatch buildup is commonly found in lawns that have been overfertilized or overwatered and have never been aerated. Thatch buildup of 3/4 in. or more will restrict water and nutrient penetration into the soil (think thatched roof) and can harbour disease organisms that can increase the need for pesticides. Slice open a section of turf. If the thatch is more than 3/4 in. thick, take action.
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Don’t give up on shady areas
Growing grass under shade trees isn’t easy, but one key to success is choosing the right shade grass species and planting method for your region. In cool-season areas, you’ll get a better result using seed rather than sod. Sod is grown in wide-open fields under conditions that favour sun-loving grasses. Choose red and tall fescues for shady areas in Northern zones. Garden centres will have grass seed mixes formulated for shade. Late summer and mid-spring are the best times to establish cool-season grasses in shady areas.
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Don’t wait too long between mowing
If you came back from a vacation and the neighbour kid neglected to mow your yard, don’t try and mow it down in one day. Cut off some of the length and then wait a couple days and mow again. This will cause less stress on the grass. You may need three passes depending on how long the grass grew.
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Don’t skip reseeding
Reseeding is a job you can do in a weekend if you have an average-size lawn. You’ll have to wrestle home a couple of engine-powered rental machines. And once your work is done, be prepared to keep the soil damp with daily watering for the first month or so. It’s the key to a successful reseeding job.
Don’t cut grass too short
Every grass type has an optimal cutting height, and you’re better off on the high side of that height. Here are a few reasons: The grass blade is the food factory of the plant. Short blades just can’t generate as much food as long blades. Long blades also shade and cool the soil. That means weed seeds are less likely to sprout, and you won’t have to water as often because water won’t evaporate as fast. Not sure what type of grass you have? Take a sample to a garden centre for identification.
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Don’t mow in the same direction every time
Instead, mow in a different direction every time: front to back, back to front, diagonal, etc. Repeatedly mowing the exact same way will cause the grass blades to grow at an angle, and you may develop permanent tracks from the mower wheels.
Don’t cut wet grass
Mowing wet grass can cause the mower wheels to leave ruts in your yard, and you could leave behind giant clumps of clippings that could smother the grass beneath. And the wet grass will carpet the underside of your mower deck with a thick mat that’s a pain to clean. Yikes!
If you apply too much grass fertilizer, especially in sandy soils, a good share of it will leach through the soil and make its way into our precious groundwater, lakes, streams, and wetlands. Lawn grasses only need a certain amount of food. More isn’t always better.
Don’t ignore pet areas
Dog spots are round patches about four to eight inches in diameter with dead grass in the middle, encircled by dark green grass. They’re most apparent in the early spring when dormant grass first begins to turn green again. You have to replant your grass; it won’t come back on its own. But first, you have to dilute or remove the caustic urine from the soil. Thoroughly soak the area with lots of water.
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Don’t fertilize shady areas more
People tend to over-apply fertilizer to shady areas because the grass is struggling. But that just kills it faster!
Many people really have two lawns—a lawn that gets full sun for most of the day, and a shaded lawn that may get only two to four hours of direct sun—and their water and fertilizer needs are different. The grass in shady areas needs less water because less evaporates, and it needs less fertilizer because with less sun it doesn’t grow as much. When you go into shade, shift the controls on the spreader so you’re spreading about half the amount.
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Don’t forget to check soil moisture
Common wisdom for establishing the correct length of time to water is to place a pie pan in the yard and note how long it takes to fill 1/2 in. deep. But experts prefer a more accurate method that takes soil conditions into account. Heavier soil doesn’t absorb moisture nearly as fast as loose or sandy soil, so it needs to be watered longer.
After an extended warm, dry period (dry soil is the key) set up your sprinkler and set a timer for 30 minutes. Then turn off the water and check the soil for moisture depth. Do this by pushing a shovel into the lawn and tipping it forward to expose the soil. See how deep the water has penetrated. Moist soil will be darker. Your goal is to run the sprinkler until the water penetrates 3 to 4 in. into the soil.
If the water has not penetrated far enough, restart the watering and continue to keep track of the time. Check again in another 15 minutes. With trial and error, you’ll eventually arrive at the optimal length of time to water for your soil type and water pressure.
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Don’t use broadleaf herbicides in extreme temperatures
You need to kill weeds when they’re growing. That’s because the herbicide is absorbed through the leaves and then sent throughout the rest of the plant. When the weather is too cool, the weed isn’t growing and the herbicide won’t be absorbed, and the chemical isn’t as effective. Too hot and the herbicide will stress the grass. The product directions will give you the best temperature range. Apply herbicides when rain isn’t forecasted; a soaking will just rinse off the herbicide before it can do any good.
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Don’t discount compost
Top-dress your lawn with high-quality compost. Compost can bring depleted or damaged soil back to life, resulting in stronger root systems and happier plants. One teaspoon of compost contains a billion beneficial microorganisms that help create better soil structure and texture, which improves nutrient, water and air retention.
To apply compost, spread it over your lawn with a shovel, aiming for a layer 1/4 to 1/2 in. thick. Then work it into the turf with a rake. It’s best to do this after aerating. Most garden centers sell bagged compost. But to cover an entire yard, you’re better off buying in bulk from a garden center. Don’t worry about buying too much—any leftovers will benefit your garden and shrub beds.
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Don’t remove all fallen leaves
Did you know that leaves are actually great for your lawn? Leaves have an organic matter in them that is great for your soil. It works as a natural fertilizer, helping your grass to grow the following year. According to Sam Bauer, a turfgrass researcher from the University of Minnesota, it can even suppress the growth of weeds as well. He recommends mulching the leaves by using a lawn mower (specifically with a specialized mulching blade, if you have one) over the leaves to cut them up. However, if you have huge piles of leaves on your lawn, it may be hard to mulch all at once (and yes, can smother your grass). Remove those piles until you have a good dusting of leaves around your lawn before mulching with your mower.
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