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Pest damage evidence — a gnawed structural beam and a chewed electrical wire
Daniel Brady · NH-Licensed Pesticide Applicator · License #782664
Reviewed by Daniel Brady

Do earwigs damage garden plants or flowers?

Cosmetic — real, minor, and seasonal
Yes, but modestly. European earwigs chew small, ragged holes in leaves, flower petals, and soft fruit, and can set back tender seedlings when populations are high. University extension entomologists are consistent that earwig damage is often minimal and tolerable, and that earwigs also function as beneficial predators of aphids and other soft-bodied garden pests. This is a horticulture issue about your plants, not a structural or health issue about your home, and it's outside what a pest control company genuinely treats.

At a glance

  • Can it?: Yes, but
  • How common: Occasional
  • Hype: Overstated
  • Evidence: Well documented
The honest answer

The short of it

The verdict
Cosmetic — real, minor, and seasonal

Yes, earwigs nibble seedlings, petals, and soft fruit at night — but the damage is usually cosmetic and tolerable, and earwigs are also genuine predators of aphids.

The correction

What they claim vs. what the evidence supports

One shared severity track, two markers. The span between them is the hype delta — named out loud.

The claim — earwigs destroying garden plants and flowers

That earwigs are sinister plant-destroyers laying waste to gardens overnight — often reinforced by the unrelated (and false) folk claim that earwigs crawl into your ears.

Where the claim comes from: Garden and pest-marketing blogs and general-content sites that repeat the 'menace' framing without noting how limited the actual feeding damage is.

Severity, 0–100
Hype says55
25Evidence says
Hype delta30point gapWell documented
The evidence

Earwig feeding damage is real but limited. Per UC IPM, earwigs can devastate seedling vegetables or annual flowers and seriously damage maturing soft fruit or corn silks only at high population densities — and the same source notes earwigs have been shown to be important predators of aphids. Established, healthy plants generally shrug off ordinary earwig feeding.

The gap

The feeding is real but the 'menace' framing is overstated — earwigs are as much a predator of other garden pests as they are a pest themselves, and healthy established plants tolerate the damage they do cause.

Damage assessment

What is actually harmed

Damage verdict
Cosmetic — real, minor, and seasonal
CosmeticCan it?Yes, but
The specimen
Pest
European earwig (Forficula auricularia)
What is in question
Seedlings, annual flowers, soft fruit, and corn silk
How common
Occasional
Evidence
Well documented
Mechanism

Earwigs feed nocturnally, using chewing mouthparts to rasp small, ragged holes in tender leaves, flower petals, and the surface of soft, ripening fruit. Feeding concentrates on the softest, most accessible tissue — seedlings and young growth in particular — while established, hardened plant tissue is far less vulnerable.

Actually at risk4
  • Tender seedlings, which can be set back or lost entirely under a high earwig population
  • Annual flowers such as dahlias, marigolds, and zinnias, especially their petals
  • Soft, ripening fruit like peaches and strawberries
  • Corn silk, where feeding can reduce kernel set in a bad year
Not at risk — despite the myth4
  • The survival of established, healthy plants under ordinary earwig populations
  • Woody plants and mature shrubs or trees
  • Any part of your home's structure
  • Human health — earwigs do not transmit disease, and the 'crawls in your ear' claim is a myth
Worst realistic case
Lost seedlings or annual flowers, plus cosmetically holed leaves and fruit, in a wet year with an unusually heavy earwig population. This does not extend to the death of established plantings or damage to your property.

Assessed from: UC IPM Earwigs; UMass Extension Managing Earwigs and Slugs in the Vegetable Garden; University of Connecticut Home & Garden; Wisconsin Horticulture

The compounding clock

Does it get worse if you ignore it?

Over time
Self-limiting — it ends

Self-limiting and seasonal — damage tracks moisture and population, both of which fall off on their own.

The timeline
3 stages
  1. WeeksReversible

    In a damp, mulched garden bed, an earwig population builds and nocturnal feeding on seedlings and soft new growth becomes noticeable as small ragged holes.

  2. One seasonReversible

    Feeding peaks during the wettest, most humid stretch of the growing season, then declines as conditions dry out and natural predators and population dynamics catch up.

  3. YearsReversible

    Populations rise and fall year to year with moisture and garden debris levels, but there is no cumulative, worsening trend from one season to the next in an ordinary home garden.

What stops the clock
Reducing damp harborage — boards, mulch piles, and garden debris where earwigs shelter during the day — and trapping with rolled newspaper or shallow oil traps. Dry weather ends an active population on its own.
Repair scope

Who actually fixes this

Scope, not dollars — the honest answer to “how expensive is it,” routed to the right trade.

Who fixes it
You — a DIY patch
Effort
An afternoon

This is a garden cultural-control task, not a pest control service or a repair — reducing damp harborage and protecting seedlings when damage actually appears is the entire honest fix.

The right order
  1. 1
    Confirm earwigs at night with a flashlight before treating anything — daytime holes are just as often slugs or caterpillars
  2. 2
    Reduce damp harborage: clear boards, mulch piles, and garden debris where earwigs shelter during the day
  3. 3
    Trap with rolled, damp newspaper or shallow containers of oil near affected beds, and protect only the seedlings or soft fruit actually showing injury
Route by symptom
  • Nobody — nothing to repairDamage is light and plants are established — often nothing beyond routine garden care is needed at all
Do not
  • Don't blanket-spray broad-spectrum insecticide on garden beds — extension sources note this also kills the aphid-eating predators earwigs provide
  • Don't assume every leaf hole is an earwig — confirm at night before treating
Where we help — and where we don't

This is genuinely not an Anchor job — earwig feeding is a horticulture matter, not structural or household pest control. Route it to UNH Cooperative Extension or a local garden center, who can help with plant-specific timing and cultural controls.

In depth

The full picture

01

What earwigs actually do to a garden

European earwigs are nocturnal feeders with chewing mouthparts, and they use them on the softest tissue available: tender seedlings, flower petals, and the surface of ripening soft fruit like peaches and strawberries. The resulting damage looks like small, ragged holes rather than the neat consumption of a whole leaf, and it's most visible on plants that haven't yet hardened off — a young seedling shows the damage far more dramatically than an established perennial does.

Corn silk is a specific, sometimes-serious exception: earwig feeding on silk can interfere with pollination and reduce kernel set, which is a genuine yield concern for anyone growing corn at home. But even here, the effect is limited to the crop and the season, not a broader threat to the garden or the property.

02

Why the fear is overstated for anything past a seedling

UC IPM is direct about the scale: earwigs can devastate seedling vegetables or annual flowers and seriously damage maturing soft fruit or corn silks only at high population densities. That's an important qualifier — it takes an unusually large earwig population, typically in a damp year with plenty of harborage, to reach the level of damage the word 'devastate' implies. For an ordinary garden with a normal earwig presence, the damage tends to be a scattering of cosmetic holes that established, healthy plants shrug off entirely.

The folk myth that earwigs crawl into people's ears has no basis in fact and has likely done more to inflate their reputation as a menace than the actual feeding damage has.

03

The part the marketing leaves out: earwigs eat aphids

The same UC IPM guidance that describes earwig feeding damage also notes that earwigs have been shown to be important predators of aphids and other soft-bodied pests. That's a genuinely two-sided relationship: the same earwig population nibbling your dahlia petals at night may also be reducing an aphid infestation on the same plant. Extension sources across multiple states — UMass, University of Connecticut, and Wisconsin Horticulture among them — consistently frame earwigs as a mixed-bag garden presence rather than a straightforward pest, and specifically warn against reflexively spraying for them because doing so removes a natural aphid check along with the earwigs.

04

Why this stays a garden question, not a pest-control one

Everything about earwig feeding damage is confined to plant tissue in the garden — leaves, petals, seedlings, soft fruit, corn silk. None of it touches your home's structure, wiring, plumbing, or any system a licensed pest control company treats. That's the honest boundary this hub draws throughout its yard-and-garden pages: a real horticultural nuisance is not the same thing as a property-damage problem, and dressing it up as one to justify a service call isn't honest.

The right resource for an earwig problem is UNH Cooperative Extension or a local garden center, who can advise on the specific plants affected and the timing that matters for your garden — not a pest control treatment plan.

Key takeaways
5 points
  • Yes — earwigs chew small, ragged holes in seedlings, flower petals, and soft fruit at night, and can reduce corn kernel set through silk feeding.
  • The damage is cosmetic and usually tolerable; it takes a high population in a wet year to seriously threaten a planting.
  • Earwigs are also documented predators of aphids — spraying broadly removes a beneficial along with the pest.
  • Established, healthy plants are not at risk; seedlings and soft new growth are the genuine vulnerability.
  • This is horticulture, not pest control — UNH Cooperative Extension and garden centers are the right resource, not a pest treatment plan.
New Hampshire context

Damp NH gardens are earwig-friendly by default

Southern and central New Hampshire's mulched vegetable beds, stone borders, and shaded perennial plantings are exactly the damp, sheltered daytime harborage European earwigs favor, which is why they're a routine-to-occasional presence in local gardens rather than a rare one. Populations typically build through a wet spring and early summer and decline as the season dries out.

If you garden in southern or central New Hampshire and notice earwig feeding, checking at night with a flashlight to confirm the culprit — rather than assuming and spraying — saves both the aphid-eating benefit they provide and the expense of treating the wrong pest.

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This one's a garden question, not a pest control one.

Earwig feeding is a horticulture matter — UNH Cooperative Extension and your local garden center are the right call for plant-specific advice.

Follow-up questions

Frequently asked

Sources & citations(4)
  1. UC IPM — Earwigs

    Earwig feeding damage at high densities; earwigs as aphid predators

    extensionverified 2026-07-16
  2. UMass Extension — Managing Earwigs and Slugs in the Vegetable Garden

    Earwig damage to seedlings and soft fruit in the Northeast

    extensionverified 2026-07-16
  3. University of Connecticut Home & Garden — Earwigs

    Earwig feeding behavior and beneficial predator role

    extensionverified 2026-07-16
  4. Wisconsin Horticulture — Earwigs

    Earwig scavenger and predator role in the garden

    extensionverified 2026-07-16

Written & reviewed by

Verified

Daniel Brady

NH-Licensed Pesticide Applicator · License #782664 (NHDAMF, RSA 430)

Daniel Brady is the New Hampshire–licensed applicator behind Anchor Pest Services, a family-owned pest control company serving the Manchester area since 2017.

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Last updated Jul 2026

Honest pest help for New Hampshire homes

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Earwig damage to garden plants is a horticulture issue, not a structural or household pest problem — we won't sell you a treatment plan for it. If earwigs or other pests are also a problem inside your home, Anchor Pest Services genuinely helps with that. Family-owned since 2017, NH license #782664, serving Manchester, Nashua, Concord and nearby towns.

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