Lower earwig damage by trapping nightly, clearing damp hideouts, and shielding seedlings until catches drop.
Earwigs are night feeders that hide in tight, damp spots during the day. In small numbers they’re mostly harmless, and they can even snack on other insects. When numbers surge, they chew seedlings, rough up tender leaves, and ruin the look of flowers like dahlias and zinnias.
The fix is rarely one magic spray. You get better results by changing what your beds offer (moist cover), then trapping steadily where earwigs travel. This plan keeps your garden usable while bringing pressure down week by week.
Why Earwigs Gather Near Beds
Earwigs crowd into places that stay cool and moist: under boards, in thick mulch, beneath flat pots, along edging, and inside dense groundcovers. After dusk they climb plants to feed, then head back to cover near dawn. If you water late, leave wet debris near stems, or keep clutter tight against the bed, you’re giving them a perfect daytime refuge.
They’re not pure plant-eaters. Michigan State University Extension notes that earwigs may also feed on other insects, so many gardens do best with steady reduction near tender plants rather than trying to wipe them out everywhere. MSU earwig management notes include cleanup and trapping steps that fit home gardens.
Check If Earwigs Are Causing The Damage
Chewed leaves can come from slugs, caterpillars, beetles, and rough weather. A night check keeps you from treating the wrong issue.
Clues That Point To Earwigs
- Ragged holes and notches on tender leaves, often on seedlings
- Petal edges nibbled on flowers that open at night or hold tight folds
- Damage that’s worse after warm, damp nights
One Flashlight Test
Go out 30–60 minutes after sunset with a flashlight. Look at the base of plants, inside blooms, and under low leaves. If earwigs are responsible, you’ll spot them tucked into creases or running for cover. UNH Extension suggests checking activity at night and using simple traps, like damp newspaper, to confirm earwigs are present. UNH earwig fact sheet shares trap ideas and timing that work well in home beds.
Dealing With Earwigs In The Garden With Fewer Surprises
This plan is built around what earwigs do every day: hide near the bed, roam after dark, hide again at dawn. Work through the steps in order. Each one makes the next step work better.
Clear The Hideouts Next To The Plants You Care About
Start within a few feet of the damaged plants. Pick up boards, spare pots sitting flat on soil, loose pavers, soggy leaf piles, and thick weeds. If you can’t remove a hiding place, treat it as a “trap zone” and place traps right beside it.
The University of Nevada, Reno Extension recommends sanitation like removing debris and even lifting containers on pot feet to reduce earwig hiding places around beds and planters. UNR Extension earwig notes include practical cleanup and barrier ideas.
Water In The Morning
Morning watering lets the soil surface dry by dusk. That single shift can cut night feeding, since earwigs prefer damp travel lanes. If you use drip irrigation, check for leaks that keep a band of soil wet all day.
Protect Seedlings And Showpiece Flowers
Don’t try to defend every plant. Focus on what earwigs damage most: young transplants, leafy greens, strawberries, and prized blooms.
- Seedling collars: A short ring of plastic or cardboard around stems blocks crawling pests. Push it slightly into soil so there’s no gap.
- Snug row cover edges: A light cover tucked tight at the edges keeps earwigs off leaves at night.
- Flower timing: Pick dahlias and zinnias early in the morning while earwigs are still hiding, then trap hard near the plants.
Trap Nightly For 7–14 Nights
Trapping works when you do it daily and place traps right beside the damage. Michigan State University Extension describes damp rolled-up newspapers left overnight on the soil, then shaken into soapy water in the morning. MSU earwig management notes show the same basic rhythm. State fact sheets also describe oil-in-can traps set level with the soil lip so earwigs tumble in and can’t climb out.
Choose The Best Earwig Control For Each Situation
Use this table to match methods to your bed style and the level of damage you’re seeing.
| Method | When It Helps Most | How To Use It Well |
|---|---|---|
| Rolled newspaper trap | Any bed where you can check daily | Set at dusk beside damage; shake into soapy water at dawn |
| Cardboard fold trap | Seedling rows and raised beds | Create internal tunnels; replace when it turns soggy |
| Short hose trap | Windy areas and flower beds | Reusable shelter; place tight to the plant base |
| Bamboo tube trap | Small beds and containers | Bundle tubes and set on bare soil near damage |
| Shallow oil cup trap | Hot spots with heavy night traffic | Bury rim-level; refresh oil often; dump daily |
| Remove boards, clutter, wet debris | When earwigs have endless cover | Clear within a few feet of target plants first |
| Morning watering only | Damage that tracks damp evenings | Let the surface dry by dusk; fix leaks |
| Seedling collars or snug covers | New transplants and fragile greens | Use as a short-term shield while trapping lowers numbers |
| Diatomaceous earth ring | Dry weather and containers | Works only when dry; reapply after rain or overhead watering |
Traps That Catch More Than A Handful
Two details matter most: placement and timing. Put traps where earwigs already travel, then empty them early.
Placement That Works
- Right beside the plant with fresh chewing
- Along the bed edge where soil meets mulch
- Next to dense groundcover you can’t thin
- Beside pots, edging, or stones that stay cool at midday
Timing That Keeps The Catch High
Set traps at dusk. Empty them at dawn. A late morning check often looks like failure, since earwigs scatter once the sun warms the bed. If you miss a day, reset that night and keep going rather than adding more gadgets.
Trap Setups And Daily Routine
Pick one trap style you’ll actually keep up with. Run it daily for a week, then scale back to twice a week once catches drop.
| Trap Type | Night Setup | Morning Action |
|---|---|---|
| Rolled newspaper | Dampen lightly, roll tight, set beside damage at dusk | Shake into soapy water, re-roll if needed |
| Cardboard fold | Fold into a loose tent so there are tunnels inside | Tap into soapy water, replace when soft |
| Hose pieces | Lay 6–8 inch pieces near plant bases | Lift and shake into soapy water, reset |
| Bamboo tubes | Bundle a few tubes and place on bare soil | Dump into soapy water, rinse, reset |
| Oil cup | Bury rim-level, add oil plus a tiny lure | Dump and refresh oil every 1–2 days |
| Upside-down pot with straw | Stuff with straw and set near blooms | Lift and knock earwigs into soapy water |
Bed Tweaks That Cut Night Feeding
Once trapping is running, these tweaks keep earwigs from bouncing back in the same spot.
Thin Wet Mulch Near Stems
Mulch helps with weeds and moisture, yet thick wet mulch right against stems makes hiding easy. Pull mulch back an inch or two from the crowns of seedlings and tender plants until pressure drops.
Lift Containers For Airflow
Earwigs love the cool gap under pots. Raise containers on pot feet, bricks, or a wire shelf so the underside dries out during the day.
Use Dry Barriers Only When They Fit Your Watering
Diatomaceous earth can deter crawling insects while it stays dry. Apply a thin ring around the base of a plant and keep it off blooms. Reapply after rain or overhead watering.
When Baits Or Sprays Are Worth It
If you’ve cleared hideouts and trapped daily for a week and you’re still losing seedlings nightly, a targeted bait station may help. Place it along travel lanes and keep it covered and out of reach of children and pets. Choose products labeled for earwigs and for the site you’re treating.
Spot sprays can work in cracks and hiding spots in non-edible areas, yet they’re easy to misuse. If you apply a spray, treat it as a short, local step and follow the label for timing and any harvest limits on edible crops.
One-Week Earwig Knockdown Checklist
- Day 1: Clear boards, flat pots, and wet debris near the damaged plants.
- Day 1: Switch watering to morning and fix leaks.
- Night 1: Set one shelter trap every 3–6 feet by the damage.
- Morning 2: Empty traps into soapy water. Reset at dusk.
- Nights 2–7: Keep trapping daily. Add one oil cup at the worst hot spot if needed.
- All week: Shield seedlings with collars or a snug cover edge until chewing stops.
- End of week: Keep two traps running twice a week to catch stragglers.
Small Mistakes That Keep Earwigs Coming Back
Traps Set In The Wrong Place
Traps belong right next to damage. If you move them to a neat corner, you’ll catch fewer earwigs and keep losing leaves.
Traps Checked Too Late
Check early. A noon check often looks empty because earwigs have already left the trap.
Wet Cover Left In Place
When a bed stays damp and cluttered, earwigs keep finding shelter. Thin wet mulch near stems and clear debris during outbreaks.
What Success Looks Like
Within a few nights you should see higher trap catches and fewer fresh bites on new leaves. After a week, catches usually drop and seedlings start to grow without new chewing. Keep a couple traps handy during warm, damp stretches, since earwig pressure often rises after rainy periods or heavy watering.
References & Sources
- Michigan State University Extension.“Earwig.”Explains cleanup steps and how to use rolled newspaper traps and soapy water removal.
- University of Nevada, Reno Extension.“Earwigs.”Recommends sanitation and habitat changes that reduce hiding places around beds and containers.
- Maine DACF.“Earwigs.”Fact sheet with trap designs like oil cans and paper shelters placed at night and emptied in the morning.
- UNH Extension.“Earwigs Fact Sheet.”Gives identification tips and trap setups, including oil cans and damp paper shelters.