Earwigs leave ragged holes overnight; cut hiding spots, run easy traps, and shield tender plants with simple barriers.
Earwigs can turn a clean bed of seedlings into Swiss cheese in a few nights. They’re sneaky, they feed after dark, and they wedge into any tight, damp nook they can find. The good news: you don’t need to carpet-bomb your beds to get control.
This article gives you a practical plan that works in real gardens. You’ll learn how to confirm earwigs are the culprit, lower their daytime shelter, catch them fast with low-effort traps, and protect the plants they love most.
What Earwigs Do In Gardens
Most garden earwig trouble comes from the European earwig. It’s an omnivore. That means it can snack on pests like aphids, then swing by your petals or seedlings when the mood hits. Utah State University Extension sums up this split role well on its European earwig overview.
Earwigs hide in the day and feed at night. They like tight, cool places: under mulch, boards, stones, pots, dense groundcover, folded leaves, and the rim of a planter. When you see damage that seems to appear out of nowhere, that night-feeding pattern is your clue.
Plants Earwigs Hit Hard
They don’t treat every plant the same. You’ll see the worst chewing on soft, thin tissue and on blooms where a small nibble ruins the look.
- Seedlings and transplants
- Leafy greens
- Strawberries and other low fruit
- Dahlia, zinnia, marigold, and similar flowers
- Young corn whorls and tight leaf folds
Damage That Points To Earwigs
Earwig chewing often looks like rough-edged holes, scalloped leaf margins, and ragged petals. You may also see shallow gouges on soft fruit. Slugs leave slime trails. Caterpillars leave frass. Earwigs usually leave neither.
Spot Earwigs Fast With A Night Check
If you want to stop guessing, do one quick night check. Grab a flashlight and step outside 30–90 minutes after dark. Look on the plants with fresh damage and on the soil right at the base. Earwigs tend to freeze for a beat when the light hits, so you can see them before they skitter into cover.
Low-Effort Daytime Hiding Checks
No time for a night walk? Flip their hiding spots in daylight.
- Lift nearby boards, stones, and pots.
- Check under thick mulch right against stems.
- Look inside rolled leaves or tight whorls.
If you find earwigs tucked under objects close to damaged plants, you’ve got confirmation. Now you can act with purpose, not panic.
How To Get Earwigs Out Of My Garden Without Harsh Sprays
The best results come from stacking a few simple moves. Each one knocks the population down a bit. Together, they change the whole situation: fewer places to hide, fewer earwigs reaching your plants, and fewer nights of surprise damage.
Cut Daytime Shelter In The Hot Spots
Start where damage is happening. You’re not trying to sterilize the yard. You’re making the problem beds less cozy.
- Pull mulch back 2–4 inches from seedling stems and the crowns of soft plants.
- Move boards, unused pots, and stacked trays away from the bed edge.
- Trim dense groundcover that touches the bed and stays damp.
- Pick up fallen petals, fruit, and leaf piles that sit under attacked plants.
This step alone can cut the pressure fast, since earwigs spend a lot of their day jammed under cover near the next meal.
Water In A Way That Leaves The Surface Drier Overnight
Earwigs don’t need standing water, yet they thrive when the top layer stays damp. Adjusting your watering can make your beds less inviting.
- Water in the morning so the surface dries by nightfall.
- Aim water at the soil, not over the whole plant canopy.
- Fix drippers that leak into constant wet patches.
If you’re using thick mulch for summer heat, keep it, just pull it back from the plants that are taking hits. You can push it back later once the surge settles.
Trap Earwigs Where They Travel
Traps work because earwigs love tight hiding tubes and sheltered pockets. You give them a “perfect” spot, then empty it. The Royal Horticultural Society suggests a classic method using an upturned pot stuffed with straw on canes near attacked plants, described on its earwigs advice page.
Two trap styles are easy, cheap, and effective:
Rolled Cardboard Trap
- Roll corrugated cardboard into a loose tube.
- Secure with twine or a rubber band.
- Place it on the soil near damaged plants, right at the bed edge.
- In the morning, tap the roll into a bucket of soapy water.
Upturned Pot Trap
- Stuff a small pot with straw, dried grass, or shredded paper.
- Invert it near blooms or seedlings getting chewed.
- Check early morning, then shake contents into soapy water.
Run traps daily for a week, then every few days. You’ll usually see the catches drop once you’ve removed their best cover and thinned the crowd.
Earwig Control Options And When To Use Them
| Method | What It Does | Best Timing |
|---|---|---|
| Pull mulch back from stems | Reduces daytime shelter right where feeding starts | Day 1, then maintain weekly |
| Move boards and pots away | Stops “base camp” hiding close to plants | Day 1–2 |
| Morning watering | Keeps the surface drier during peak night activity | All season during outbreaks |
| Rolled cardboard traps | Captures earwigs seeking tight daytime cover | Daily for 7–10 days, then as needed |
| Upturned pot-and-straw traps | Creates a shelter you can empty each morning | Near flowers and seedlings during damage |
| Physical collars on seedlings | Blocks access to tender stems and leaves | At transplant time and after heavy catches |
| Sticky barrier on bed edges | Slows nighttime travel into the bed | Short bursts during peak feeding weeks |
| Targeted bait or labeled spray | Knocks numbers down when traps can’t keep up | Only when damage stays high after trapping |
| Monitoring boards | Shows where earwigs cluster so you can place traps | Before and during control steps |
Protect Plants While You Lower The Population
Traps reduce numbers, yet your plants still need protection in the meantime. Think of this as putting a temporary fence up while you clear the troublemakers out.
Use Simple Collars On Seedlings
Collars work well on small plants because they limit climbing access. Cut the bottom off a paper cup or a plastic pot and press it 1–2 inches into the soil around the seedling. Keep the collar tall enough that leaves don’t drape over the edge and touch the ground, since that becomes a bridge.
Keep Blooms Off The Soil
Earwigs love low, sheltered flowers. If you stake dahlias, zinnias, or other blooms, keep petals from resting on mulch or soil. A single draped bloom can become an easy on-ramp.
Place Monitoring Boards To Find The Hot Spots
If earwigs are spread out, place a few small boards flat on the soil as daytime shelters you can lift and check. UC Agriculture and Natural Resources describes earwig management and monitoring concepts within its IPM guidance, including ways earwigs use shelters and wraps in cropping systems: see the UC IPM European earwig management page. In gardens, the same idea helps you spot where they cluster so you can concentrate traps there.
When A Targeted Insecticide Makes Sense
Most home gardens get good control with shelter reduction and trapping. Still, there are times when damage stays high: heavy mulch beds, dense plantings, or a big hatch that coincides with tender seedlings. If you choose a product, go targeted and follow the label word for word.
Know What You’re Applying
Spinosad is a common active ingredient in products labeled for many garden insects. The National Pesticide Information Center explains what spinosad is and how it works in its Spinosad general fact sheet. If you use it, spray at dusk when earwigs start moving, aim where they travel, and avoid spraying when pollinators are active on open blooms.
Make Sprays The Last Step, Not The First
Sprays work best after you’ve already removed shelters and started trapping. If you skip that foundation, earwigs keep pouring out from cover and the problem rebounds. Pairing steps keeps results steadier.
If you garden organically, check labels for allowed uses and crop listings. If you garden conventionally, the same rule stands: label first, then apply only where needed.
Trap And Barrier Setup That Works Night After Night
| Item | Setup | Reset Timing |
|---|---|---|
| Cardboard roll | Loose tube placed on soil at bed edge | Empty each morning for 7–10 days |
| Upturned pot with straw | Stuff pot, invert near blooms, keep opening slightly raised | Shake out each morning |
| Soapy water bucket | Water plus a small squirt of dish soap | Refresh every 2–3 days |
| Monitoring boards | Flat boards placed near damaged plants | Lift and check every morning |
| Seedling collar | Cup or pot ring pressed into soil around stem | Leave on until plants toughen up |
| Mulch gap ring | 2–4 inch bare-soil ring around crown | Re-form after heavy rain or weeding |
| Bed-edge cleanup strip | Clear clutter and weeds in a 6–12 inch band | Touch up weekly |
Common Mistakes That Keep Earwigs Coming Back
When earwigs feel endless, it’s often one of these issues:
- Traps placed too far away. Put traps right next to the damage, not across the yard.
- Traps checked at the wrong time. Empty early morning. Midday checks miss the peak shelter crowd.
- Mulch piled against stems. That’s a free daytime hotel.
- Watering late in the day. Damp surfaces at night raise activity where you least want it.
- Spraying without removing cover. Earwigs hide, then return when residues fade.
A Simple 10-Day Plan You Can Stick With
If you want a clear rhythm, here it is. It’s steady, not complicated, and it fits into normal garden time.
Days 1–2
- Pull mulch back from attacked plants.
- Move nearby boards, pots, and clutter away from bed edges.
- Set 4–8 traps near the worst damage.
Days 3–7
- Empty traps each morning.
- Keep watering in the morning.
- Add a few monitoring boards to find the next hot spot.
- Add collars on any seedlings still getting chewed.
Days 8–10
- Keep trapping every other morning.
- Remove traps that stay empty and concentrate on the areas still catching earwigs.
- If damage stays high in one zone, consider a targeted labeled product after dusk, paired with traps.
Most gardens see a clear drop in fresh damage during this window. If your yard has heavy groundcover or lots of hidden crevices, keep a few traps running through the season as a pressure release.
References & Sources
- Utah State University Extension.“European Earwig.”Overview of earwig feeding, life stages, and IPM-style control options.
- Royal Horticultural Society (RHS).“Earwigs.”Practical garden notes and a classic shelter-trap method using straw-filled pots.
- University of California Agriculture and Natural Resources (UC IPM).“European Earwig Management Guidelines.”Monitoring and management concepts that translate well to placing traps and reducing shelter.
- National Pesticide Information Center (NPIC).“Spinosad General Fact Sheet.”Plain-language explanation of spinosad, including what it is and how it affects insects.