Key takeaways
- Orange peel does not reliably keep slugs away; it can actually attract them
- Upturned orange or grapefruit halves make a handy overnight slug trap
- Some cats dislike citrus smells, but scattered peel only puts them off for a few days
- Chopped peel composts fine in a normal heap with plenty of browns
- Add only small amounts of citrus to a wormery
Orange peel is a handy free extra in the garden, but not quite in the way the internet suggests. It won’t keep slugs off your hostas or banish cats from your borders. What it does well is rot down in the compost heap, and catch slugs if you use it as a trap.
Here’s what orange peel really does, how to use it, and what to try instead when you need a pest problem properly sorted.
Scattered peel looks cheerful, but slugs are more likely to shelter under it than run away from it.
Does orange peel deter slugs?
No, orange peel doesn’t reliably deter slugs. In fact slugs are often found tucked under damp citrus skins, because they offer shelter and something to nibble.
That makes peel useful as a slug trap rather than a barrier:
- Cut an orange or grapefruit in half and eat the inside.
- Turn the empty halves upside down on the soil near the plants at risk, in the evening.
- Lift them the next morning and collect the slugs underneath.
- Move the slugs well away or dispose of them, then reuse the skins until they go mouldy.
This works best in damp spring and autumn weather, when slugs are most active. It’s a nice extra alongside other controls, such as nematodes and night-time torch patrols. Our guide on how to get rid of slugs covers all the options, and you can read about nematodes for slug control too.
Does orange peel keep cats out of the garden?
Only a little, and not for long. Many cats dislike strong citrus smells, so fresh peel may put some cats off digging in a bed for a few days. The scent fades quickly as the peel dries, and rain washes it away.
If a cat is using your borders as a toilet, these work much better:
- Fill bare soil with plants, as cats look for open, easy-to-dig ground
- Lay prickly prunings or twiggy sticks over newly sown seedbeds
- Cover seedbeds with chicken wire or netting until plants are growing
- Keep the soil moist, as cats prefer dry, crumbly ground
Our guide on how to stop cats pooing in your garden has more humane ideas.
Pet note: Citrus peel and especially concentrated citrus oils can upset a cat’s or dog’s stomach. Don’t use essential oil sprays in the garden, and keep piles of peel where dogs can’t snack on them.
A peel mulch might put a cat off for a day or two. Planting bare soil up tightly does a much better job.
How to compost orange peel
Orange peel composts well. Chop it small, mix it with plenty of dry, brown material and it will rot down with everything else.
- Chop it up. Pieces around 2-3cm rot much faster than whole skins.
- Balance it with browns. Mix peel with torn cardboard, dry leaves or straw. Fruit scraps are wet, so browns stop the heap going slimy.
- Bury it in the heap. This keeps fruit flies down.
- Be patient. Citrus peel is tough and waxy, so it can take longer to vanish than softer scraps.
Wormeries are a bit different. Worms don’t love citrus, and lots of it can make the bin too acidic. Add a few chopped pieces at a time and put the rest in the compost heap. Our guide on starting a wormery explains what worms like best.
For more on building a heap, see our guide to hot, cold and fast composting.
Chopping peel into small pieces before it goes on the heap helps it rot down much faster.
Other ways to use orange peel outdoors
Orange peel has a few other small uses, as long as you keep expectations modest.
- Fire lighters. Fully dried peel catches easily, so it’s handy for a chiminea or fire pit.
- Bird food. Hollowed-out orange halves can be hung in trees in winter and filled with suet or seed.
- A food waste bin. If you have no compost heap, your council’s food waste collection will take it.
There’s no good evidence that peel repels ants, aphids or whitefly. For sap-sucking pests, squash small colonies by hand or wash them off with a jet of water. If you really need a spray, only authorised products can be used as pesticides in the UK, so pick an approved one and follow the label.
Mixing peel in with plenty of autumn leaves keeps the heap balanced and stops it turning sloppy.
Common mistakes with orange peel
- Relying on it to stop slugs. Peel can attract slugs, so check underneath and remove them.
- Piling up whole skins. Big pieces look messy and take ages to rot. Chop them first.
- Overloading a wormery. Small amounts only.
- Using citrus oil sprays. Concentrated oils can harm plants and pets.
- Expecting it to fix a cat problem. Planting and covering bare soil work far better.
Frequently asked questions
Does orange peel keep slugs away?
No, orange peel does not reliably keep slugs away. Slugs often gather under damp citrus skins. That makes peel more useful as a trap than a barrier. Use upturned halves, check them each morning and remove the slugs you find.
Does orange peel keep cats out of the garden?
Only a little, and not for long. Some cats dislike citrus smells, but scattered peel loses its scent within days and after rain. Dense planting, prickly twigs in bare soil and covering seedbeds work far better.
Can I put orange peel in my compost?
Yes, orange peel composts well in a normal heap. Chop it into small pieces so it breaks down faster. Mix it with plenty of browns, such as cardboard and dry leaves. Whole peels can take a long time to rot.
Can I put orange peel in a wormery?
Only in small amounts. Worms are not keen on citrus, and lots of peel can make the bin too acidic. Add a few chopped pieces at a time mixed with other scraps. Put larger amounts in the compost heap or food waste bin.
Is orange peel safe for dogs and cats?
Peel is not a good snack for pets. Citrus peel and its oils can upset a dog’s or cat’s stomach if eaten. Don’t use concentrated citrus oils around pets. If your dog likes to scavenge, compost peel in a closed bin.
What other kitchen scraps are useful in the garden?
Most fruit and veg scraps are best composted. Coffee grounds, tea leaves, banana skins and crushed eggshells all rot down well in a heap. None of them reliably keeps pests away, so treat them as compost, not pest control.
Curious about other kitchen scraps? Read our honest look at coffee grounds in the garden, or browse more fixes in our garden problems guides.
Our team produces practical UK gardening guidance from source research, contributor records and established horticultural practice. Editorial standards are overseen by Matt W.
