Should I Leave Grass Clippings on my Lawn?

After mowing the lawn, one of the most common questions homeowners ask is whether they should leave the grass clippings where they are or remove them altogether.

The short answer?

It depends on how much grass you've removed.

When your lawn is mowed regularly and only a small amount of growth is removed, finely chopped grass clippings can actually be good for your lawn. However, if the lawn has become overgrown or you've removed a large amount of grass in one go, it's usually better to collect and remove the clippings.

When It's Okay to Leave Grass Clippings

If you're mowing your lawn regularly, the grass clippings are usually short enough to break down quickly. As they decompose, they return nutrients back into the soil, helping feed your lawn naturally.

Because the clippings are small, they'll generally settle between the blades of grass and disappear within a few days without causing any issues.

This is one of the reasons why regular lawn mowing is beneficial—not only does it keep your lawn looking its best, but it also produces smaller clippings that can naturally decompose.

When Grass Clippings Should Be Removed

If your lawn has grown long between mows, the clippings become much larger and heavier.

Rather than breaking down quickly, they tend to sit on top of the lawn in thick clumps. These clumps can block sunlight, trap moisture and prevent air from reaching the grass underneath, sometimes leaving yellow or dead patches behind.

Large piles of clippings can also make your freshly mown lawn look untidy and may encourage fungal problems if left sitting for extended periods.

In these situations, collecting and removing the clippings is usually the better option.

What About Mulching?

Some lawn mowers are fitted with mulching blades designed to chop grass into much finer pieces before returning it to the lawn.

When used correctly on a regularly maintained lawn, mulching can be an excellent way to recycle nutrients back into the soil while reducing green waste.

However, mulching isn't a solution for heavily overgrown lawns. If the grass is too long, even a mulching mower can leave behind excessive clippings.

So... What's the Best Option?

For most homeowners, the decision is quite simple.

If you're mowing regularly and only taking a little off the top, leaving the clippings on the lawn is usually perfectly fine.

If the lawn has become long, thick or overgrown, removing the clippings will almost always leave your lawn looking healthier and more presentable.

The goal isn't to remove every clipping every time—it's to avoid leaving so much behind that it causes problems.

Common Mistakes When Dealing with Grass Clippings

Leaving Thick Clumps Behind

Large piles of clippings block sunlight and airflow, making it harder for the grass underneath to stay healthy.

Waiting Too Long Between Mows

The longer the grass grows, the more clippings you'll create. Regular mowing produces smaller clippings that break down much more easily.

Assuming Clippings Always Need to Be Removed

Small clippings aren't harmful. In fact, they can return valuable nutrients to the soil and reduce the need for fertiliser.

Mulching an Overgrown Lawn

Mulching works best when your lawn is maintained regularly. Trying to mulch very long grass often creates the same problems as leaving large clumps behind.

🌱 The Rule of Thumb

If you can clearly see piles of grass sitting on top of your lawn after mowing, there's probably too much there.

If the clippings disappear between the blades of grass after a day or two, they're unlikely to cause any problems.

A healthy lawn isn't about removing every blade of grass—it's about knowing when the clippings are helping your lawn and when they're getting in the way.