Learn How To Re-Use Your Pumpkins As Compost After Halloween

Last Updated on January 18, 2024 by Kimberly Crawford

The ghosts and ghouls have faded back into the night, Werewolves have shifted to their human form, and the portals to the other dimension have all but closed for the year. With Halloween officially over and the spooky season moving to a more cheerful time of the year, it’s time to find a use for all our pumpkins used during the festivities. 

According to the Elmbridge Borough Council, more than 17 million pumpkins are bought yearly for the season. Only 3 million pumpkins are used beyond decorations, and over 10 million are disposed of in landfills, leading to waste and rising greenhouse gasses. Today’s post will focus on making good of the saying reduce, reuse and recycle as we work to reduce global food waste.

As we bid farewell to the eerie ambiance of Halloween, it’s crucial to acknowledge the environmental impact of discarding pumpkins. These vibrant fruits, once proudly displayed as decorations, often meet an untimely end in landfills. Yet, these overlooked gourds hold immense potential beyond their spooky facade.

By embracing composting techniques, we not only divert them from landfills but also harness their nutrients to enrich our soil. This sustainable practice not only benefits our gardens but also contributes to a greener, more ecologically conscious future.

Wiser Decisions from the Start

reuse pumpkin

From the moment you look online to get carving ideas from SpiritShack and other reputable online sources, you begin encountering ways to make more use of your pumpkin besides decoration. Two of these uses include:

Cooking and Baking

The flesh can be harvested for cooking and baking. Pumpkins can make soups, stews, pies, muffins, and other dishes. The flesh is high in vitamins and can add a tasty, seasonal twist to your recipes.

This is an excellent way to use the inner scrapings as you prepare to carve your pumpkin. For long-term storage, consider making pumpkin puree that lasts for months in the freezer.

Giving Back to Nature

Consider donating pumpkins to nearby farms or animal shelters. Pumpkin flesh is a favorite treat of many animals, including pigs, goats, and chickens.

Just because you and your family can’t think of a use for the leftover vegetable doesn’t mean a wise farmer can’t. One man’s trash is another pig’s buffet or something along those lines.

Step-by-Step Guide to Composting Your Halloween Pumpkin

After Halloween, reusing pumpkins as compost is a great way to reduce waste while enriching your garden soil. Here’s a step-by-step guide to composting pumpkins:

Step 1: Setting Up Your Compost Bin

Choose a well-drained location for your compost pile or bin. If you use a bin, ensure it has adequate aeration to aid in composting.

Layering materials promotes efficient decomposition by creating a balanced mix of greens and browns. With the creation of your new composting bin, a new way to use food scraps is born.

Step 2: Preparing Your Pumpkin for Composting

Consider using a scraper or spoon to remove any leftover materials when removing decorations. Non-organic items can hinder composting and even introduce toxins into the soil.

This will worsen as you begin amending with the toxic soil, so ensuring thoroughness from the beginning of the process is vital.

Step 3: Optimizing Pumpkin Decomposition 

Cutting the pumpkins into smaller pieces speeds up decomposition and makes mixing them with other compost materials easier. Aim for pieces about 4-6 centimeters in length to increase the surface area exposed to microbes.

This step applies to any other food scraps you consider adding to the compost, such as watermelon skin and other large vegetable waste.

 Step 4: Managing Seeds in Pumpkin Compost

Pumpkin seeds can be composted, but they may take longer to decompose. Set aside seeds if you’re saving them for planting or roasting. Taking out the seeds also keeps potential volunteer pumpkin plants from sprouting in your compost.

If you find yourself facing the problem of a few sprouts popping about, simply remove them before they have a chance to grow further. If you are inclined towards gardening, gently relocate and transplant the new sprouts into a better location.

Step 5: Maintaining Ideal Composting Conditions

For optimal composting, aim for a carbon-to-nitrogen (C:N) ratio of 25-30:1. Greens, such as pumpkins, provide nitrogen, while browns such as dry leaves provide carbon.

Check the balance regularly and adjust to maintain a healthy composting environment. Turning the compost every 1-2 weeks promotes uniform decomposition and helps mix the materials. 

This aeration keeps the pile from becoming too compact, allowing microbes to breathe, which is essential for composting. Composting also requires a certain amount of moisture. Maintain a consistently moist but not waterlogged compost pile.

If the mound appears to be dry, add water while turning it. If the mixture is too wet, add more brown to absorb the excess moisture.

Step 6: Showing Patience in Composting Process

The decomposition timeline varies depending on temperature and pumpkin piece size. Be patient and keep up with the compost pile. More oversized items like pumpkins can take several weeks or months to decompose completely.

If you are not taking the extra step to reduce your food waste sizes, prepare for a longer wait. It is a good exercise in patience, nonetheless.

Step 7: Enjoy the Fruits of Your Labour

The compost is ready to use when it has a crumbly texture and a rich, earthy smell. Apply it to your garden beds or mix it with your soil.

Composting improves soil fertility, structure, and water retention. From here on out, you have the key player in enriching your soil and keeping your gardens healthy.


Turning your Halloween pumpkins into nutrient-rich compost is a sustainable and rewarding way to end the festive season. The journey from spooky decorations to valuable compost requires patience, but the ecological benefits are well worth it.

Remember, as you embark on this composting adventure, you’re not just discarding remnants of Halloween; you’re nurturing the soil that sustains life. The process encapsulates the beauty of nature’s recycling, turning what once served as a seasonal centerpiece into a year-round gift for your garden.

Moreover, by composting your Halloween pumpkins, you’re actively participating in a larger movement toward reducing food waste. It’s a small but impactful step in curbing the staggering statistics of discarded pumpkins contributing to landfills.

Each pumpkin diverted from this fate translates into a dent in the overall environmental toll. Your commitment to composting not only enriches your immediate surroundings but also sets a commendable example for others in your community.

In essence, the transformation of pumpkins into compost symbolizes a cycle of renewal and sustainability. It’s a reminder that even after the festivities fade, our actions can continue to resonate positively with the environment.

So, as you bid adieu to the Halloween season, consider this composting journey not just as an end but as a beginning—a proactive step toward a more responsible and environmentally conscious way of living. For more articles with excellent gardening advice, check out https://farmfoodfamily.com.


  • Council, E. B. (2023, October 24). Millions of pumpkins go to waste after each Halloween. Elmbridge Borough Council. https://www.elmbridge.gov.uk/news/2023/millions-pumpkins-go-waste-after-each-halloween
  • Ashford, S. (2023, October 12). 14 fun pumpkin carving ideas. SpiritShack. https://www.spiritshack.co.uk/blog/halloween/14-fun-pumpkin-carving-ideas/
  • Compost Chemistry – Cornell Composting. (n.d.). https://compost.css.cornell.edu/chemistry.html