Every fall, families in The Woodlands gather to bash, fling, and drop their leftover jack-o-lanterns at Pumpkin Smash. Have you ever wondered what happens after the smashing is done? Instead of sending all those pumpkin pieces to a landfill, we can give them a new life as compost.
Composting gives your waste a second chance. It’s a natural process that transforms items like kitchen scraps, herbicide-free grass clippings, fallen leaves, and pumpkins into nutrient-rich soil amendments. In fact, 20 to 30 percent of the trash we throw away could be composted instead – and the best part is, you can compost right in your own backyard! With just a little space and a few simple steps, composting at home is easy, rewarding, and good for your garden.
What Is Compost?
Compost is the dark, earthy material that forms when organic matter breaks down. It adds nutrients to the soil, helps it hold water, and improves drainage and structure. It’s great for gardens, flower beds, and even lawns.
What Can You Compost?
Here’s what belongs in your compost pile:
-
Kitchen scraps like fruit and veggie peels, coffee grounds, eggshells, and smashed pumpkins (smaller pieces will compost faster)
-
Herbicide-free grass clippings – just be sure to mix with dry materials so they don’t clump
-
Dry leaves should be shredded for best results, but whole leaves work too
-
Coffee grounds from your kitchen or local coffee shop!
-
Other materials like shredded newspaper, pine needles, and green plant trimmings
For more guidance on what exactly can go in your compost pile, read our guide to solving common compost problems.
Skip the Troublemakers
Keep your compost pile clean and effective by leaving out meat, dairy, oily foods, and pet waste; they can attract pests and cause odors. Avoid large branches that take too long to break down and make sure to leave out weeds and plants with seeds. If they don’t fully compost, you might end up spreading weeds or grass right into your garden next season.
For information on how to dispose of these compost troublemakers sustainably, review WM curbside yard waste guidelines.
Class participants using various tools to turn an outdoor compost pile
How to Build a Compost Pile
You don’t need fancy equipment. Build a bin using wire, bricks, or scrap wood. Choose a partially shady spot near your garden with good drainage. Stack materials in layers:
-
Bottom layer (brown material): Twigs and coarse plant matter (for airflow)
-
Middle layer (green material): Kitchen waste (smashed pumpkins) and garden debris
-
Top layer (brown material): Dry leaves and brown (dead) plant trimmings
Keep the pile about four feet wide by four feet tall. Turning the pile weekly in the summer and monthly in the winter helps it break down faster. After three to four months, you’ll have rich compost ready to use.
S.M.A.R.T. Composting!
A compost pile needs five things: Size, Moisture, Aeration, Ratios and Temperature
Compost thermometer inserted in a compost pile
-
Size: Four feet by four feet high is the ideal size to create a strong habitat for organisms
-
Moisture: Add water evenly between layers. Keep pile moist as a damp sponge. If you squeeze it, only a few drops of water should drip.
-
Aeration: Turn or “aerate” your pile regularly to infuse oxygen and redistribute bacteria, fungi and other organisms.
-
Ratios: Layer two parts carbon to every one part of nitrogen.
-
Temperature: A good carbon/nitrogen ratio will keep your compost pile at an optimal temperature between 135°F and 165°F.
The right mix of brown and green materials (including smashed pumpkins) gives you a good carbon-to-nitrogen (C:N) ratio. Aim for two parts brown with one part green (2C:1N) – too much brown, and it breaks down slowly; too much green, and it can smell. If you find yourself struggling with a smelly bin or low temperatures, check out our guide to solving common compost problems.
By composting at home, you reduce landfill waste, improve your soil, and support a healthier environment right here in our community. Whether you are composting pumpkins after Halloween or grass clippings in the summer, composting is a simple step that turns everyday waste into a valuable resource for your yard and garden.
For more information on composting: Texas A&M AgriLife Extension – Easy Gardening: Composting