Why can't you throw away pumpkins?

Don’t Trash Your Pumpkin — Compost It Instead

After Halloween, it’s tempting to toss that carved pumpkin in the trash. But doing so does more harm than you might think. When organic materials like pumpkins end up in landfills, they’re buried under layers of waste, cut off from oxygen. Without proper airflow, they decompose anaerobically—meaning they break down without oxygen—and this process releases methane gas.

Methane is a potent greenhouse gas, far more effective at trapping heat in the atmosphere than carbon dioxide over the short term. According to environmental experts, landfill waste is a significant contributor to methane emissions, and food scraps like pumpkins play a part in that problem.

So what’s the better option? Treat your post-Halloween pumpkin like the food it is. Pumpkins are 100% biodegradable and packed with nutrients, making them ideal for composting. When added to a compost pile, they break down efficiently in the presence of oxygen, turning into rich, organic matter that nourishes soil rather than polluting the atmosphere.

You don’t need a fancy system to compost—many communities offer drop-off programs after Halloween, or you can break the pumpkin into smaller pieces and add it to your backyard bin. Just remove any candles, paint, or non-organic decorations first.

Composting your pumpkin is a small act with real environmental benefits. It reduces methane emissions, cuts down on landfill waste, and gives back to the earth. So next time you're done with your jack-o'-lantern, skip the trash can and give it a second life in the soil. Your garden—and the planet—will thank you.