Got leftover Halloween pumpkins? The Forest Preserve District of DuPage County urges residents to think twice before hauling those old orange orbs off to a forest preserve.

While it might seem harmless, dumping pumpkins can harm local habitats. Pumpkins aren’t part of the area’s natural ecosystem, and when they’re discarded in preserves, they can smother delicate native plants that wildlife depends on. They also add competition for already stressed native species.

Pumpkins left near roads can attract wildlife, putting animals and drivers at risk. The extra food isn’t needed and can even encourage animals to gather in ways that spread disease.

As pumpkins rot, they can create unhealthy microhabitats that foster bacteria, fungi, and viruses harmful to soil and plants.

“Organic waste like pumpkins can upset the ecological balance of our preserves,” said ecologist Tony Del Vallé. “When we leave behind foreign material, it can change the soil nutrients and chemistry. Additionally, seeds from this material can grow and outcompete native plants. This can impact plants and eventually wildlife that are adapted to specific conditions.”

Dumping anything on forest preserve property, even something biodegradable, is illegal and can result in fines. When staff have to remove dumped pumpkins, it takes time and resources away from habitat restoration and other essential conservation work.

Instead of dumping pumpkins, residents can compost them at home or take them to a local “pumpkin smash” event. Many DuPage County communities offer these fall recycling events that turn old pumpkins into nutrient-rich compost to help plants grow.

To raise awareness about the environmental impact of pumpkin dumping, the Forest Preserve District has posted a short Halloween-themed video on its YouTube channel.