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  • 6 min read
  • 08.10.2025

Codling Moth in Your Garden: How to Spot and Stop This Sneaky Fruit Pest

Discover how to identify and naturally control codling moth in your garden. Look for tiny holes in apples or pears, sawdust-like frass, and internal rot caused by larvae tunnelling through the core. Use pheromone traps, remove affected fruit, and encourage garden birds to keep pests in check. Protect your apple and pear trees for a healthy, worm-free harvest.

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If your apples or pears look perfect on the outside but turn out to be a brown, mushy mess inside, the culprit is likely the codling moth. These tiny pests are notorious for ruining fruit crops, tunnelling into the cores and leaving behind frass (that sawdust-like mess) as they go. But don’t worry, with a few smart moves, you can protect your fruit trees naturally and keep your harvests healthy.

What Is Codling Moth?

The codling moth (Cydia pomonella) is a small, greyish-brown moth that targets apples, pears, and occasionally walnuts. While the adult moths themselves are easy to miss, their larvae, tiny cream caterpillars with brown heads, are what cause the real damage.After laying eggs on young fruit, the larvae burrow in through the skin and feed on the core, causing internal rotting and early fruit drop. You might first notice small holes in the fruit, sometimes with a sprinkle of brown frass (droppings) near the entry point.

Symptoms and Key Identifiers

It’s easy to mistake codling moth damage for general bruising or rot, but there are a few tell-tale signs to look for:

  • Tiny holes on apples or pears, often near the base or sides
  • Sawdust-like frass (droppings) around the entry holes
  • Soft, rotting patches developing from the inside out
  • Caterpillars or tunnels in the fruit core

If you cut open an affected apple and find a little worm inside, you’ve found the codling moth culprit.

Natural Ways to Control Codling Moth

The good news is that you can manage codling moth infestations without resorting to harsh chemicals. These eco-friendly strategies will help break the life cycle and protect your trees year after year.

Use Pheromone Traps

Pheromone traps are one of the most effective ways to control codling moth naturally. These traps release a scent that attracts male moths, preventing them from mating with females and reducing egg laying. Hang traps in your apple and pear trees from mid-spring onwards, before the first moths appear. Check them regularly and replace as needed.

Remove Affected Fruit

Codling moth larvae often hide out in fallen or damaged fruit, so good garden hygiene makes a big difference. Collect and destroy any infected fruit that’s fallen to the ground, don’t compost it, as the larvae can survive and emerge next season. This simple step stops the next generation of moths in their tracks.

Encourage Predatory Birds

Your feathered friends are fantastic natural pest controllers. Encourage garden birds like tits and robins by hanging feeders near your fruit trees and providing clean water. These birds love a codling moth snack and will happily pick caterpillars and pupae from the bark and branches. A little wildlife-friendly gardening goes a long way in keeping pest numbers down.

Preventing Codling Moth in Future Seasons

Once you’ve dealt with an infestation, prevention is key. Here’s how to keep codling moth numbers under control year after year:

  • Wrap tree trunks with corrugated cardboard bands in summer, larvae crawl down to pupate in these, and you can remove and destroy them later.
  • Prune your trees in winter to remove hiding spots and improve airflow.
  • Harvest fruit promptly, overripe fruit attracts egg-laying moths.
  • Check fruit regularly during summer for the first signs of damage.

A mix of vigilance, wildlife support, and smart trapping will help keep your trees healthy and your fruit harvests worm-free.

Dealing with codling moth might sound daunting, but once you know what to look for, they’re easy to outsmart. Regular monitoring, clean-up, and support from your garden’s natural predators will help you reclaim your apples and pears.So this year, keep an eye out for those tiny holes and frass deposits, and act early. With a few simple steps, you’ll soon be biting into crisp, perfect fruit, no surprises inside!

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Meet the author
Nelly

Nelly works in the She Grows Veg marketing department and is an incredible cook! She's learning how to grow veg fast in her very own container garden. Her favourites so far are the Dwarf Sunflower called 'Sunspot' and our Dwarf Pea called 'Tom Thumb'.

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