As Halloween fast approaches, many are preparing for the spooky season, with a 5,000% increase in UK searches over the past month for “Halloween costumes” and a 400% increase in searches for “pumpkin carving ideas”.
However, councils across the UK are warning of levels of waste caused by discarded pumpkins, plastic costumes, and decorations.
The experts at Rainbow Rubbish Removals therefore urge households to think green this Halloween, revealing exactly how much food and plastic waste occurs during this season and tips on how to to reduce waste this year.
The True Cost of Halloween: Equivalent of 83 million plastic bottles
An estimated 42% of UK consumers buy a pumpkin for carving, equivalent to roughly 30 million pumpkins purchased.
This results in more than 18,000 tonnes of edible pumpkins ending up in the bin. Since it can take up to 20 years for a pumpkin to break down in a landfill, the environmental impact is far greater than what most people realise.
As they decompose, pumpkins release methane, a powerful greenhouse gas that contributes to climate change.
Every year, around seven million Halloween costumes are thrown away in the UK, which is an estimated 2,000 tonnes of plastic waste. About 83% of these outfits are made from polyester, a material that can take anywhere from 20 to 200 years to decompose. When these synthetic fabrics break down, they release microplastics and greenhouse gases, polluting the environment and harming wildlife.
Miroslav Radov, waste expert at Rainbow Rubbish Removals commented: “Much of Halloween waste can easily be avoided. Most carved pumpkins are perfectly edible, yet millions are discarded instead of being cooked or composted.
“The popularity of single-use costumes and decorations also means tonnes of plastic end up in landfill after just one night’s use.
“With Halloween celebrations growing every year, the environmental impact is increasing, creating what councils are calling a ‘frightening trend’ of seasonal waste that puts further strain on local recycling and collection services.”
Councils calling for increased Halloween recycling
Local councils across the UK are urging residents to think twice before throwing away pumpkins, costumes, and decorations this Halloween.
Many are running pumpkin collection and composting schemes, while others are hosting costume swap events or providing dedicated recycling drop-offs for decorations. Before purchasing a brand new costume this year, check if your city offers a ‘swap shop’, as it’s a great initiative aimed at encouraging sustainable living, reducing single-use waste and helping families save money.
Emma Stokes, Worcestershire County Council’s Cabinet Member for the Environment, warns: “People might think leaving pumpkins out for wildlife is a good idea, but rotting pumpkins can actually harm animals, especially hedgehogs.
“We encourage everyone to enjoy their pumpkins to the fullest so try out some new recipes, or dispose of pumpkins responsibly by composting or repurposing.”
Giles Hughes, Chief Executive at West Oxfordshire District Council, said: “Switching from new shop bought costumes to making something from old clothing or buying second-hand is another way to be more sustainable.
“Charity shops, apps such as Vinted, and Facebook Marketplace will all have lots of options in the weeks leading up to Halloween.”
How to make a difference at home:
Reducing Halloween waste doesn’t have to be difficult, as just a few simple swaps can make a far less damaging impact on the environment:
- Compost your pumpkins – Cook the edible parts for soup or alternative recipes such as pumpkin pie, and compost the leftovers instead of binning them.
- Reuse or swap costumes – Trade with friends or shop second-hand to cut down on single-use plastics.
- Choose sustainable decorations – Opt for recyclable, reusable, or biodegradable materials instead of plastic-heavy decor.
- Recycle right – Separate recyclable items like cardboard and bottles, and check your local council’s Halloween recycling guidance.
- Plan your purchases – Buy only what you need and avoid excessive packaging or disposable partyware.
- Get creative – Upcycle old clothes and household materials into unique DIY costumes and decorations.
Thursday 2nd – Friday 31st October 2025
Art & Design Department, Central Library, George IV Bridge, Edinburgh.
Hillside Art Group facebook page – 
