What to do with lawn clippings (2024)

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Quick facts

  • Lawn clippings usually do not need to be bagged.
  • Recycling lawn clippings can reduce your fertilizer needs and improve your soil.
  • Recycling clippings to the lawn does not contribute to thatch.
  • If you must remove clippings, they can be composted or used as mulch.

Recycle your lawn clippings

Grass clippings will always be a part of lawn care. You can bag clippings or recycle them by returning them to the lawn.

As a general rule, grass clippings of an inch or less in length can be left on your lawn where they will filter down to the soil surface and decompose quickly. Remove longer clippings because they can shade or smother grass beneath causing lawn damage.

Don’t throw out bagged grass clippings as yard waste. Use clippings as a garden mulch or compost them instead.

Benefits of recycling clippings to the lawn

  • Clippings are a valuable source of nutrients and you can use less nitrogen fertilizer if you recycle clippings to the lawn.
  • Adding organic matter from clippings may help improve your soil if it is sandy, heavy clay or low in organic matter.
  • Regular mowing will greatly reduce the need to collect clippings. Avoid cutting more than 1/3 of the grass height at a time.

Do clippings increase thatch?

Thatch is a layer of undecomposed organic matter that builds up between the soil surface and the actively growing green vegetation. A thatch layer will develop if organic matter is produced faster than it is decomposed.

Contrary to popular belief, leaving clippings on the lawn does not contribute to increased thatch.

Clippings are composed of water and easily-degradable compounds that break down rapidly and do not accumulate. Long clippings may contain wiry stem material that is slower to decompose, but are still not significant contributors to thatch buildup.

What causes thatch

  • Vigorous grass varieties
  • Excessive nitrogen fertilization
  • Infrequent mowing
  • Low soil oxygen levels (found in compacted or water logged soils)

See How to control thatch.

When should you pick up clippings?

While leaving clippings on the lawn is recommended, there are some exceptions to the rule:

  • Remove clippings if the lawn is heavily infested with diseases such as leaf spot, rust or dollar spot to help reduce disease severity.
  • If the lawn is wet or the grass has become too tall when you mow, clippings can mat together and smother the grass.
  • If your mower is unsafe to operate without a bagging attachment, the bag must be left in place.
  • If clippings land in a curb and gutter area, sweep them up so they don’t get into storm drains or carried to nearby water resources where they can negatively impact water quality.

Using clippings as mulch

In general, putting mulch around flowers, vegetables, shrubs and trees helps reduce weeds, conserve moisture and moderate soil temperatures. Grass clippings are a good mulch option with a few conditions:

  • Do not apply more than 1 or 2 inches of grass clippings at one time.
  • Use dry clippings. Wet grass clippings can mat down, reducing reduce oxygen and moisture from getting down into the soil.
    • When oxygen is limited, anaerobic decomposition of the clippings may take place, leading to the production of offensive odors.
  • Do not use grass clippings as mulch if the lawn was recently treated with an herbicide for dandelions or other broadleaf weeds as this may harm your plants.
  • If your lawn has been treated recently, consult the herbicide product label for any concerns related to using clippings as mulch.

Composting clippings

You can add clippings to the backyard compost pile.

Composting involves mixing grass clippings and other plant materials with a small amount of soil containing microorganisms that decompose organic matter. Grass clippings are excellent additions to a compost pile because of their high nitrogen content.

Grass clippings should not be the only compost material. As with mulches, a thick layer of grass clippings in a compost pile will lead to bad odors from anaerobic decomposition. Mix them with dry materials such as leaves or straw.

SeeComposting and mulching – A guide to managing organic yard wastes.

Sam Bauer andJulie Weisenhorn, Extension educators;Bob Mugass, retired Extension educator;Brad Pedersen, horticulture professor emeritus

Reviewed in 2018

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What to do with lawn clippings (2024)

FAQs

What to do with lawn clippings? ›

While grass clippings can be composted, they are more beneficial if left on the lawn. If clippings are composted, they should be mixed with other yard wastes or soil to aid in decomposition and reduce odors.

How do I get rid of a lot of grass clippings? ›

Lawn clippings usually do not need to be bagged. Recycling lawn clippings can reduce your fertilizer needs and improve your soil. Recycling clippings to the lawn does not contribute to thatch. If you must remove clippings, they can be composted or used as mulch.

What to do with grass clippings after mowing? ›

Grass clippings should be left in place across the yard as it may be used as a natural fertilizer. Clippings quickly decompose and return essential nutrients back to the soil.

Does putting grass clippings on bare spots help grass grow? ›

Leaving them behind when you mow, also known as grasscycling, can help build a healthy lawn. Contrary to popular belief, clippings do not lead to thatch buildup, which damages the grass. Instead, they can act as a natural fertilizer, reducing the need for additional nitrogen fertilizer.

Is it good to pick up grass clippings? ›

When to collect clippings. Grass clippings should only be collected if the grass is overgrown and large clumps have formed, covering portions of the lawn. Clippings should also be collected when a lawn disease is present in the lawn. Mowing and the spread of clippings contribute to the spread of lawn diseases.

What to do with clumps of grass after mowing? ›

Unless you consider gardening to be a workout, in which case a fan rake will work wonders. If, however, you're staring at a case of “excessive clumping”, then dispersing them might not be your best option. Instead, you'll want to rake them up, pop 'em in a wheelbarrow and leave them for your dustbin-men to deal with.

Can you mix grass clippings into soil? ›

In addition to doing all the things other biodegradable mulches do (retain soil moisture, block light to weeds, improve soil), grass clipping mulch contains so much nitrogen and potassium that it serves as a supplemental fertilizer. It may also deter some pests.

Are grass clippings good for your yard? ›

Unless you've let the lawn grow excessively long, or the clippings are in thick clumps, grass clippings are a good source of nutrients. Leaving clippings helps save fertilizer costs and thereby prevents ground and surface water contamination.

What is the fastest way to break down grass clippings? ›

gather raked leaves, grass clippings and veggie remains into a pile, wet it down and throw on a few handfuls of 10–10–10 fertilizer. Let decompose. Turn with pitchfork occasionally. In a warm climate this will go quickly.

Should grass cuttings be left on the lawn? ›

When you cut the grass during the spring and summer, leave the clippings on the lawn. As they decompose, they release up to 30 per cent of the lawn's required nutrients. Remove the clippings from the lawn at the beginning and end of the growing season when decomposition is slow.

Should you bag grass clippings in summer? ›

During the spring and early summer months, grass grows much quicker than in the later summer months. It might be best to bag your clippings in the spring and early summer when your lawn isn't as pressed for moisture. During the summer months when the grass is growing slower, bagging might not be as necessary.

How long after mowing should I wait to water? ›

HOW SOON AFTER CUTTING GRASS SHOULD YOU WATER? After mowing, wait at least 30 minutes to an hour before watering your lawn.

Should you rake or mow first? ›

Under certain circ*mstances, you should rake the grass after mowing. If the clippings come out of the mower in thick batches, you should rake them up. Thick bunches will occur when the grass is too high or too wet. Stay on the safe side and rake the clippings after the first mow of the spring.

Is it always important to rake up grass clippings after mowing? ›

Your clippings are FREE fertilizer so definitely leave them on. The only problem is aesthetics. Some people can't stand the look, especially if there are clumps on their lawns. It's also hard to mulch in wet weather because the grass clumps up in your mower and on your lawn.

How to get rid of grass cuttings? ›

If your lawn is healthy and grass clippings are not wet or thick, you can simply rake them away. Bagging your grass clippings can be beneficial in more ways than one. Not only does bagging remove the clippings from your yard completely, but it also reduces pests and allergens.

What eats grass clippings? ›

to cattle – Freshly-mowed grass clippings, as well as fully fermented clippings can be safely consumed as long as they do so within 8 hours of the mowing. to goats and/or sheep – if freshly mowed, grass clippings can be fed in small amounts or if you have allowed the clippings to dry completely.

Will a lawn sweeper pick up grass clippings? ›

One of the most popular uses for lawn sweepers is picking up grass clippings, but homeowners and landscapers also use these sweepers to get rid of leaves without raking in autumn, not to mention pine needles and pine cones, twigs, sticks, acorns, and even fruit and nuts fallen from orchard trees.

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