What Can I Compost From Halloween?

Wondering what Halloween decorations can be composted after the holiday? A truly zero-waste Halloween is unlikely, but composting Halloween items can help reduce Halloween waste.

Read on for more about what Halloween costumes, decorations, candy, and more you can compost to reduce your Halloween waste. There might be more you can compost from Halloween than you initially think!

Halloween generates a heck of a lot of waste. Between single-use costumes, plastic decor, and candy galore, the trash from a single night’s scare might be as frightening as the festivities themselves. A zero-waste Halloween is a real challenge!

However, there are lots of ways to reduce waste around Halloween like swapping secondhand Halloween costumes and dressing up in creative DIY Halloween costumes, upcycling and recycling to make Halloween decorations, or even making a trash pumpkin.

A what? A trash pumpkin?! Oh, it’s a thing. Go learn how to make a trash pumpkin to decorate this Halloween season.

One of our favorite ways to reduce Halloween waste is by choosing compostable alternatives. You knew we’d say that, right? We’re a compost collection company and share lots of resources about composting at home. Composting is our jam.

Have you thought about how to celebrate a low waste Halloween and what you can compost from Halloween festivities? We bet you can compost more than you think.

In some cases, items are only compostable in industrial facilities; they won’t really decompose properly in your backyard bin, so beware of how items can be composted. Either way, let’s break down what you can put in your Halloween compost cauldron. 

Can I Compost Halloween Decorations?

Fall and Halloween lend themselves so well to natural decorations that can be composted after the holidays pass. Jack-o’-lanterns and pumpkins, the most classic Halloween decorations, definitely belong in the compost bin after fright night. 

Before trashing your pumpkin, smash it into your compost bin. If you don’t compost, find a neighbor who composts or use ShareWaste to find a local compost host where you can dump your pumpkin for free. 

Our founder wrote about planning an eco-friendly Halloween with Kids, and her friend Catherine shared how her family smashes their pumpkin up a bit and then buries it in their yard. You could bury it in your garden or anywhere in your yard. You may get some pumpkin vines growing next season, or even a pumpkin or two… or not! Nature’s a funny thing. But what a creative idea.

You can also compost lots of other natural Halloween decor like gourds, corn stalks, straw bales, and greenery. If you made a scarecrow for Halloween, all that straw inside is a great boost of browns for your bin.

We’ve seen some really cool zero waste and compostable Halloween decorations, like this set of Halloween witch’s brew decorations made from vinegar, food scraps, kombucha, coffee, and junk mail envelopes. This is so creative, and everything belongs in the compost bin after the holiday.

Whatever natural Halloween decor you use, be sure it doesn’t end up in landfills. Reuse it. Recycle it. Let it rot. You know the drill.

When sent to landfills, organic waste does not decompose properly. The nutrients in the organic matter can’t feed the microorganisms in the soil properly and instead release methane, a potent greenhouse gas, into the atmosphere. Food waste and other organic matter in our landfills is a giant environmental mess, and pumpkins contribute to this a lot around Halloween.

If you don’t compost at home or have a municipal compost option, there are lots of compost pick-up services. We’re partial to our curbside composting service if you’re in our neck of the woods, but there are lots of similar services available in other geographic areas. If you’re interested, see if something like this exists in your area.  

Some composting companies set aside additional organic waste collection days after Halloween to help ensure they can compost all the leftover Halloween fare after the festivities. Pumpkins, gourds, and other fall crop decor make up most of the extra Halloween compostables. 

Can I Compost Halloween Costumes?

Whether you can compost your Halloween costume depends on the Halloween costume you wear. Most single-use costumes are made of polyester, plastic, or some other byproduct of oil. These take hundreds of years to break down in landfills, which is one reason they’re so bad for the environment. It’s also why they can’t go in your compost bin. 

But… and this is a big but… You can compost natural fibers liked cotton, wool, and linen. If you nailed dress-up duty this year with a creative DIY costume made from 100% natural fibers, then feel free to send that to the compost bin. 

If your costume is still in good condition, it’s even better to reuse it next year, pass it along to a friend, post it in a Buy Nothing group, or find another way for someone else to wear it. If it’s truly toast and can’t be worn again, the natural fibers are organic matter. They will decompose and return as nutrients to the soil in a well-managed compost process. 

Most makeup, glitter, hair spray, and other costume beauty accessories products are not compostable. These products are often made of plastic or have chemicals in them that are not suitable for compost piles. 

There are certain companies that make bio-glitter or eco-friendly glitter that they claim can be composted. If you are using glitter to accessorize your Halloween costume, be sure to find out if your glitter is eco-friendly. Unless it’s touted as such, chances are it’s plastic and not compostable. If you’re unsure, assume it belongs in the trash. 

Can I Compost Halloween Candy and Homemade Halloween Treats?

Most types of Halloween candy and homemade Halloween treats can be composted if you don’t plan to eat them. If we can eat it, it’s generally compostable. As a side note, certain types of meats, dairy products, and oils significantly slow down decomposition in a compost pile or attract animals to backyard compost piles, so most people advise not to add these. Technically these items will decompose over time, however, even though they may not be desirable for most residential compost bins. 

Halloween candy, on the other hand, is not particularly terrible for a compost bin. So if you really don’t plan to eat it, at least let it feed the soil and return any nutrients to the Earth. 

However, it’s even better if you find a good home for it instead of letting it rot. You might consider trading with friends for things you don’t love but are their favorites. Alternatively, there are many programs to which you can donate your Halloween candy so others can enjoy it. 

While candy is compostable, most candy wrappers are not compostable. A select few companies like Alter Eco package their chocolate in compostable wrappers, but this is definitely the exception and not the rule. Be sure you don’t put your candy wrappers in the compost bin unless you’re sure they will decompose properly. 

Instead, consider using your non-compostable candy wrappers to make an eco-brick. You could also buy a Terra Cycle zero waste box and share it with neighbors to send your candy wrapper waste to Terra Cycle to be recycled responsibly.

Can I Compost Materials From Halloween Games?

Some people stay home for Halloween and make the holiday an event at home. You might play seasonal games like bobbing for apples, pin the stem on the pumpkin, or scavenger hunts for candy around the yard. 

If the materials for your games are organic matter (something that was once alive or part of something that was alive), there’s a pretty good chance you can compost it. If your game pieces and accessories are plastic or non-organic matter, then they probably belong in the trash. 

As you’re thinking about what games or activities to do to make your at-home Halloween celebration special, do your best to focus on using items that are secondhand, can be upcycled or recycled, or can be composted. All of those alternatives will help reduce unnecessary waste from the holiday celebration. 

If you’re interested in composting, check out our DIY composting resource library and our interactive composting tool to find out what you can compost at home.

If you want to compost but don’t want the hassle of doing it yourself, sign up for an organic waste collection service like WasteWell (or whatever option is available in your local area). It’s so easy to collect your food scraps, and the service does all the heavy lifting and turning to transform your food scraps into healthy nutrients for the Earth’s soil. 

What do you compost from your Halloween celebration? If you have any ideas about things we missed, tell us in the comments!

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