How To Control Earwigs In The Garden? | Stop Night Chewing

Earwigs can make a garden feel like it’s getting nibbled to pieces while you sleep. You’ll see ragged holes on petals, chewed seedlings, and little bite marks on soft fruit. Then you go out in daylight and… nothing. That’s the earwig pattern: feed at night, hide by day.

The good news is you don’t need a scorched-earth approach. Earwigs can also eat aphids and other small insects, so the goal is to push them away from the plants you care about most, then shrink the population where it’s causing damage. This article gives you a step-by-step way to do that, using traps, cleanup, watering tweaks, and targeted options when the pressure stays high.

Why earwigs show up and where they hide

Earwigs aren’t “random.” They’re drawn to two things: cover and moisture. In a typical yard, their favorite daytime shelters are mulch layers, dense groundcovers, stacked pots, boards, stones, damp leaf piles, compost edges, and tight spots under planters.

They usually feed after dark, then slide back into cool, shaded hiding places once the sun is up. That’s why you can have visible damage and still miss the culprit when you inspect plants at noon. UC’s garden guidance also notes this night-feeding, day-hiding pattern and points out that reducing hiding spots and moisture is a core part of management. UC IPM earwigs guidance for home gardens backs that approach.

How to tell earwig damage from slugs or caterpillars

Earwig chewing often looks like jagged notches on petals and irregular holes on tender leaves. Seedlings can get clipped or shredded. On dahlias and similar blooms, you may see ragged edges that show up overnight.

Slugs often leave slime trails and scrape marks. Caterpillars leave pellet-like frass nearby. Earwig damage often comes with a “cleaner” chew and no slime, with the damage clustered where there’s cover close by.

Do you always need to get rid of them

Not always. If they’re mostly under mulch and not tearing up seedlings, you might not need to chase them. The Royal Horticultural Society notes that earwigs can be helpful predators in some settings, especially where aphids are present, and damage can be minor on many plants. RHS advice on earwigs in gardens reflects that “manage the damage” mindset.

That said, when they’re going after seedlings, soft fruit, and prized flowers, taking action is worth it. You’ll get the best results by pairing habitat cleanup with traps, then adding protection for the plants they keep hitting.

Control earwigs in the garden with low-mess steps

If you want a plan that works without turning your beds into a chemical experiment, start here. These steps build on each other. Most gardeners see a noticeable change within a week when they do the trapping part daily and remove nearby hiding spots at the same time.

Step 1: Pinpoint the hot spots in one evening

Do one quick check after dusk with a flashlight. Look at the plants that show fresh damage, then scan the ground within a couple of feet. If you lift a board, peek under a pot saucer, or pull back thick mulch, you’ll often find the cluster.

Mark two or three “hot spots” in your head. That’s where your traps go first. Trapping randomly can still help, but trapping where they already gather is faster.

Step 2: Dry the hiding places they count on

Earwigs do best where the soil surface stays damp and shaded all day. You don’t need to dry out your whole garden. You just need to remove the cozy cover right next to your most vulnerable plants.

• Pull back thick mulch from seedling rows and the base of plants that keep getting chewed.
• Move stacked pots, boards, spare pavers, and empty trays away from problem beds.
• Trim back dense groundcover that touches the soil around the damaged plants.
• Water in the morning so the surface can dry before nightfall.

This isn’t about making your beds bare. It’s about denying earwigs a daytime bunker right beside dinner.

Step 3: Put your energy into traps, not guessing

Traps are the fastest, most repeatable way to drop numbers. They also tell you if your other changes are working. If traps stay empty after several nights, the pressure is falling. If they’re packed, you know to keep going.

Rolled paper trap

Roll up a damp newspaper or a piece of corrugated cardboard, then secure it with a rubber band. Place it on the soil near the plants that are getting hit. In the morning, shake the earwigs into a bucket of soapy water or tip them into a sealed bag for disposal. This “place at night, empty in the morning” cycle is a standard extension-style method for reducing earwigs without spraying.

Oil-and-soy sauce cup trap

Use a shallow container, like a tuna can or a low plastic lid. Add a small amount of vegetable oil and a splash of soy sauce. Set it level with the soil so earwigs can climb in. Check it early the next morning and reset it each evening for several nights.

Upside-down pot shelter

Stuff a small flower pot with straw or crumpled paper, then place it upside down near the plants that get chewed. Earwigs crawl inside at dawn. In the morning, tap the pot contents into soapy water. This method is also used as a “shelter trap” in garden guidance when you want a tidy, reusable setup.

Step 4: Protect the plants they keep targeting

Once you’re trapping, the next move is simple: make it harder for earwigs to reach the plant parts you care about while you cut the population. The right protection depends on what’s being damaged.

• Seedlings: Use collars (cardboard or plastic) around the stem base and keep mulch pulled back until plants toughen up.
• Flowers like dahlias: Move shelter traps a short distance away from the plant so earwigs congregate there instead.
• Soft fruit: Pick ripe fruit promptly and remove fallen fruit that draws night feeders.

Don’t skip the “cleanup” part. If you protect a plant but leave damp hiding places beside it, you can still end up with earwigs camping out inches away.

What works best based on your garden setup

Earwig pressure tends to follow patterns. Beds with thick mulch and frequent evening watering can have heavier activity. Containers on saucers, stacked pots, and shaded corners can also become earwig hubs.

Use this section to match the tactic to the situation instead of doing everything at once.

Vegetable beds and seedlings

If you’re losing seedlings, act fast. Seedlings don’t need many bites to fail. Focus on nightly trapping right beside the row and pull mulch back until plants are established. Morning watering helps because the soil surface is less inviting at night.

If you have row covers, make sure the edges aren’t creating a damp tunnel with gaps that earwigs can crawl under. A snug edge and a drier surface nearby make the cover less of a hideout.

Flower borders and cut-flower patches

When petals are getting chewed, shelter traps are your friend. Place the shelter trap near the plant, then remove the trapped earwigs in the morning. Over several nights, you’ll usually see cleaner blooms.

If you want earwigs to still help with aphids on shrubs or fruit trees, you can focus your trapping on the beds where damage bothers you, rather than wiping them out everywhere.

Container gardens, patios, and raised planters

Containers often create perfect hiding spots: saucers that hold moisture, tight gaps under pots, and shaded corners behind planters. Lift pots off the ground with pot feet or a rack so the underside dries. Empty saucers after watering when possible. Then place a rolled-paper trap near the container base and check it each morning for a week.

If earwigs are getting into a nearby shed or garage, sealing gaps and reducing cover near entry points can also reduce indoor sightings. Extension guidance commonly pairs “reduce shelter near structures” with “trap and remove” as a practical approach for home settings.

Control method	Best use	Daily effort
Rolled newspaper/cardboard trap	Seedlings, containers, tight bed edges	Low (set at dusk, empty at dawn)
Oil-and-soy sauce cup trap	Hot spots with steady activity	Low (empty and refresh)
Upside-down pot shelter	Dahlias, flowers, border plants	Low (tap out each morning)
Mulch pullback near targets	Seedling rows, soft fruit plants	One-time, then minor upkeep
Morning watering	Any bed with damp night surface	None after habit change
Remove boards/pot stacks/debris	Shaded corners and bed edges	One-time cleanup
Prompt harvest and fallen-fruit pickup	Strawberries, stone fruit, soft produce	Low during harvest windows
Targeted bait use (label-led)	When traps stay full after a week	Low, spaced applications

When traps aren’t enough and you need a targeted product

Sometimes you do the cleanup, run traps nightly, and still find packed traps day after day. That’s the point where a targeted product can make sense, used with restraint and placed where earwigs travel.

Start by reading the label and matching the product to the site. Don’t broadcast anything across the whole garden bed if the problem is concentrated in one corner. Place treatments where earwigs hide and travel: along edges, under dense cover you can’t remove, and near the plants that keep getting chewed.

Baits and low-contact options

Some gardeners use iron phosphate baits that are commonly marketed for slugs and snails. If you’re already using these products, follow label directions and don’t treat them as “harmless.” The National Pesticide Information Center provides a clear summary of iron phosphate products and the need to follow label precautions. NPIC iron phosphate fact sheet is a useful reference for safe handling habits.

For earwigs, bait-style approaches work best when placed near hiding places and refreshed as directed, paired with trapping so you can see whether pressure is actually dropping.

Barrier and spot treatments

When earwigs are clustering near structures or in thick ground cover you can’t remove, a spot or barrier treatment may be listed on products labeled for earwigs in home landscapes. Use products that are labeled for your use site, apply only where needed, and keep applications away from edible plant parts unless the label explicitly allows it.

If you garden around kids or pets, be strict with storage and placement. Labels often spell out “keep out of reach of children” and similar safety language. If you want a steady, research-based approach for earwigs without jumping straight to broad treatments, UC’s home-and-landscape guidance lays out trapping plus habitat changes as the baseline, then chemical options only when needed. UC IPM quick tips on earwigs is a short, practical companion to the longer page.

Timing tricks that make your effort pay off

Earwig work goes faster when you time it to their habits. Since they feed at night and hide by day, your biggest wins come from two moments: dusk (set traps) and early morning (empty traps and remove what you caught).

Run traps in “bursts”

Trapping once or twice is like bailing water with a teaspoon. Do it nightly for at least five to seven nights in the hot spots. Then you can switch to every other night if catches drop sharply.

If you’re seeing new damage after a stretch of calm weather, restart the nightly run. A short burst can bring things back under control without making this a season-long chore.

Don’t feed them with easy shelter

After you get the numbers down, keep the basics in place:

• Keep mulch pulled back from seedling stems until plants are sturdier.
• Store spare pots and trays away from beds.
• Water early in the day when you can.
• Pick ripe fruit and remove fallen fruit.

You’re not aiming for a sterile yard. You’re aiming for fewer earwig hideouts right next to the plants they chew first.

7-day earwig control schedule	What you do	What you track
Day 1	Dusk scouting, place 3–6 traps in hot spots	Where damage clusters
Day 2	Empty traps at dawn, pull back mulch near targets	Trap counts per spot
Day 3	Reset traps, remove nearby clutter and damp shelters	New damage on plants
Day 4	Keep traps running, switch watering to mornings	Soil surface dampness at dusk
Day 5	Protect sensitive plants (collars, shelter traps near blooms)	Damage on seedlings/blooms
Day 6	Continue nightly trapping in the top 2 hot spots	Whether catches are dropping
Day 7	Re-check after dark, keep only the traps that still catch	Which areas still need attention

Plant-by-plant tips for common problem areas

Earwigs can be picky. They’ll ignore some plants and hammer others. A little targeted attention can save you a lot of frustration.

Dahlias, zinnias, and tender blooms

Use shelter traps near the blooms and empty them early each morning. If blooms are getting ruined on the first night they open, start trapping a day before the buds crack. That way you’re lowering pressure before the “fresh buffet” appears.

Strawberries and soft fruit

Pick ripe fruit promptly. Use straw or clean mulch with a bit of breathing room around the crown so you aren’t creating a damp mat right at the plant base. Then trap along the bed edge where earwigs travel.

Leafy greens and seedlings

Pull mulch back, trap tight to the row, and use collars when needed. If you direct-seed, don’t leave boards or pots near the row while seeds are sprouting. That’s a classic setup for overnight clipping.

What not to do if you want steady results

Some moves feel satisfying but don’t help much. Others can even make the problem drag on.

• Don’t rely on one trap, one night. Earwig pressure is rarely solved in a single check.
• Don’t leave traps out for days without emptying. A full trap stops being a trap and turns into shelter.
• Don’t keep watering late in the day. A damp surface at night keeps them active close to your plants.
• Don’t scatter treatments across the whole garden “just in case.” Target the hot spots and use traps to confirm progress.

A simple rule that keeps you sane

If you only remember one thing, make it this: traps plus less hiding cover beats guessing every time. When you trap nightly and remove the nearby damp shelter, you’re hitting earwigs where they live and where they feed. That’s why this approach keeps working even when the weather shifts or new plants go in.

Once the damage stops, you can ease off. Keep one or two traps in the old hot spot and run them for a night when you see fresh chewing. You’ll stay ahead of flare-ups without turning earwig control into a full-time hobby.

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