How to Compost Grass Clippings?

How to Compost Grass Clippings?

Learn alternative composting methods for grass trimmings to boost your garden and lawn without overloading your compost system.

How to Compost Grass Clippings? How to Compost Grass Clippings?

NEED TO KNOW

  • Grass clippings do not need to go to waste. The three strongest options here are grasscycling on the lawn, adding clippings to a compost pile, or using them as mulch in garden beds.
  • Grasscycling is the easiest win. Clippings are about 80% water, break down quickly, and return nitrogen to the lawn while cutting out the time spent emptying the mower bag.
  • The biggest mowing rule on this page is simple: cut dry grass, keep blades sharp, and never remove more than one-third of the leaf blade at once. That is what keeps clippings small enough to break down cleanly.
  • A compost pile works well too, but fresh clippings can overwhelm a pile if you dump in too much at once. Mixing them with other compost materials or using a separate pile is the safer move.
  • Using clippings as mulch is a strong budget-friendly option. They are free, break down quickly, and can feed garden beds much like other mulch materials.
  • The strongest homeowner takeaway is this: leave clippings on the lawn unless there is a clear reason to bag them. That saves time, reduces waste, and lowers fertilizer dependence.


Lawn care professional using mower for eco-friendly grass clippings composting method.


Look, if you are mowing your lawn, one of the most common things you may do is throw away grass trimmings.

Maybe you dump them in a pile near the back of your yard or set them out on the street for collection. 

But did you know you can compost grass clippings? In fact, you can make them disappear with no extra work on your part!

It's true! Grass clippings can be a tremendous way to keep vital nutrients in your lawn. Or your garden.

If you want to know how, then keep reading. 
How to Compost Grass Clippings

There are three methods to compost your clippings; each method will help you practice more eco-friendly lawn care.

The first, "grass cycling," allows you to simply cut the lawn and leave the grass. The second is traditional composting, where you put grass blades in a compost pile. The third is using grass clippings as mulch in a garden bed

Let's take a look at how each of these methods for composting grass blades works. 


Grass clippings left on dry lawn to help retain moisture and reduce evaporation.


Method 1: Grass Cycling—aka Mulching

Grass cycling, also known as mulching, is simply using a mulching kit on your lawnmower so that it shreds the grass in a fashion that makes it nearly disappear into the lawn. 

Grass cycling is an easy way to help your environment! Best of all, grass clippings are roughly 80 percent water. And that means they will break down very quickly.

When they do, they will release nitrogen directly into the lawn along with some other nutrients

Best of all, with grass cycling, you don't have to keep emptying your lawn mower's bag, which can take up to 50 percent of the total time to mow your lawn!
Leave Your Clippings on the Lawn

And if you leave your clippings on the lawn, you will also help slow water lost through evaporation. As well as reduce the need to fertilize the lawn. Check out this article for more lawn care tips.

Now, to do this properly, you need to cut when the grass is dry, and you need to keep your mower blades nice and sharp.

Pro Tip! Never remove more than the top 1/3 of the leaf surface area when mowing.


Method 2: Traditional Compost Pile

Method 2 is simply the method of composting grass in your compost pile. If you are adamant about bagging grass. You can still add grass clippings to your compost pile and use it as a top dressing when it breaks down!

Best of all, if you choose this method, you could add a lot of other organic materials to your compost, including:

  • Table scraps (no meat or bones),

  • Leaves (be sure to shred them first),

  • Coffee grounds,

  • Eggshells,

  • And paper cups, napkins, plates, etc.

Here's the deal, this method alone may quickly overrun your compost pile with grass trimmings. So you may want to consider composting grass clippings in a separate pile. And simply mix them in with your other compost from time to time. 


Wheelbarrow filled with fresh grass clippings used as free mulch alternative


Method 3: Use them as mulch!

Most people don't know this, but grass clippings make a great mulch like pine straw or hardwood mulch. Plus, they are free! And because they break down so quickly, you will be giving your garden beds a nutrient boost every time you do!

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While it may not be the look for everyone, using grass clippings as landscape mulch can save a lot of money. And your plants will still get all the benefits of a hardwood or pine straw mulch

Pro Tip! Aerating the lawn in the spring and summer permits greater movement of water and air in the soil, which speeds up the decomposition of the grass. In addition, you should only water one inch every week, no more.

Method Number 4: The Secret Method

Of course, you could scrap the idea of composting clippings and have someone else do it. Like this guy did on Craigslist:


Free Craigslist post offering lawn clippings for mulch, illustrating the “secret method” of letting someone else take care of composting grass clippings.


Composting Grass At the End of the Day

Turn grass clippings into free fertilizer with these 3 easy methods:


Infographic showing how to compost grass clippings using mulching, compost pile, and top dressing methods.

1. Grass Cycling (Mulching): Shred clippings with your mower and leave them on the lawn for quick breakdown and nutrient release. 

2. Traditional Compost Pile: Add clippings to your compost pile with other organic materials, or create a separate pile for them. 

3. Mulch for Garden Beds: Use clippings as free, nutrient-rich mulch around plants.

Make your lawn shine by just keeping the grass clippings on the lawn where they belong, in the lawn! It will help keep your lawn healthy, save you money, and save you time. 

Truly, it is a great way to get that nice green lawn without wasting a lot of money on harmful fertilizers that you need to apply every few months. The above are reasons why we do not recommend paying extra for your lawn care company to remove grass clippingsComposted grass clippings are literally free fertilizer.  

Professional landscaper maintaining a green residential lawn


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