02/25/2026
The insect you instinctively brush away in disgust is currently fighting a microscopic war beneath your feet to save your summer garden.
The Myth: The Creepy Plant-Wrecker
Culturally, earwigs are vilified. Their unsettling pincers (cerci) and the ancient, baseless myth that they crawl into human ears have branded them as creepy-crawlies to be eradicated. In the garden, when we find them resting inside the chewed petals of a dahlia or clematis, we automatically assume they are the primary culprits of the destruction, labelling them as pests that must be trapped or sprayed.
The Scientific Reality: The Heavy Infantry of Pest Control
While it is true that earwigs will occasionally nibble on soft flower petals, their primary ecological role is vastly different. The Common Earwig (Forficula auricularia) is an omnivorous, night-shift predator.
The Royal Horticultural Society (RHS) explicitly champions earwigs as highly effective biological control agents, particularly in fruit orchards. During the growing season, a single earwig can consume dozens of aphids in a single night, alongside codling moth eggs and spider mites. When you find an earwig resting inside a damaged curled leaf, it is highly likely it is simply using the space as a daytime shelter after spending the night hunting the very aphids that caused the leaf to curl in the first place.
What is Happening Right Now (Late February)
To understand why this matters today, we have to look beneath the frost. Earwigs are not currently hunting in the canopy; they are engaged in one of the most advanced forms of maternal care found in the insect world.
In late autumn, female earwigs burrowed a few inches into the soil to create sealed, subterranean chambers. Right now, in late February, each mother is guarding a clutch of 30 to 50 pearly white eggs.
The cold, damp winter soil is teeming with lethal pathogenic fungi. To keep her unhatched young alive, the mother earwig remains continuously awake in the dark. She meticulously picks up and licks every single egg, coating them in fungicidal secretions, whilst fiercely using her pincers to fend off predatory ground beetles and centipedes. She will not leave the nest to feed until the nymphs hatch and are ready to emerge in the spring.
Why This Matters Ecologically
Late February and early March is the traditional time when gardeners aggressively dig, rotovate, and turn over their beds to "prep" the soil for spring.
When we double-dig the earth right now, we inadvertently slice open these fragile subterranean nurseries. Exposed to the freezing air and robbed of their mother's constant chemical grooming, the eggs succumb to fungal rot within hours, or are immediately eaten by robins. By aggressively turning the soil in winter, we are actively exterminating our own front-line defence system. Eradicating the overwintering earwigs in February practically guarantees an unchecked aphid explosion on your roses and fruit trees in May.
Your Action
Delay the Digging: Adopt a "no-dig" gardening approach. If you must turn the soil, delay heavy digging until late spring when the weather is consistently warm and the young nymphs have safely emerged from their underground nests.
Tolerate the Nests: If you are weeding or moving pots and accidentally uncover a small soil chamber filled with white eggs and an adult earwig, do not crush her. Gently cover the nest back up with soil to let her continue her work.
Build Summer Refuges: Prepare for their emergence. Take a small terracotta pot, stuff it loosely with straw, and hang it upside down in your fruit trees. This mimics the tight, dark crevices they need to hide in during the day, keeping your top predators exactly where you need them for the summer night shift.
The Verdict
Not every unsettling insect is a villain.
Some are nocturnal hunters, currently starving in the freezing dark to protect the next generation.
Leave the earth unturned, offer them shelter, and let the balance return.
Scientific references & evidence
Royal Horticultural Society (RHS). Earwigs on plants. (Statutory horticultural guidance confirming F. auricularia as a net-beneficial predator of fruit aphids and cautioning against pesticide use).
Kölliker, M., & Vargo, E. L. (2001). Maternal care and the evolution of family interactions in the European earwig. (Foundational entomological study detailing the absolute necessity of the mother's chemical grooming to prevent fungal mortality in overwintering eggs).
Moerkens, R., et al. (2009). The importance of the earwig Forficula auricularia in the biological control of aphids in apple orchards. Agriculture, Ecosystems & Environment. (Quantitative analysis demonstrating the vast numbers of aphids consumed by nocturnal earwig foraging).
The Wildlife Trusts. Common earwig. (Provides life-cycle phenology, confirming the late-winter subterranean nesting behaviour of females in the UK).
