Fig Mites: Symptoms, Treatment & Prevention

Quick Answer

Two very different mites attack figs. The microscopic fig bud mite (Aceria fici) distorts new leaves and shoot tips and, importantly, spreads fig mosaic virus. Spider mites (Panonychus and relatives) cause fine stippling, silvery speckling, bronzing, and webbing on leaves in hot, dry weather. Treat both with a dormant horticultural oil spray before bud break and sulphur or insecticidal soap on leaf undersides during the season, and avoid broad-spectrum insecticides that kill helpful predatory mites.

Mites are the pest you rarely see and often misdiagnose, because they are too small to spot without a hand lens. You diagnose them by the damage they leave. Getting them right matters more on figs than on most plants, because one of the two culprits does more than chew leaves: it spreads an incurable virus.

What Fig Mite Damage Looks Like

There are two distinct patterns. Spider mites produce tiny stippling, silvery speckling, or bronzing across the leaves and fine webbing on the leaf undersides, worst in hot, dry, dusty spells. Fig bud mites work inside the buds, so you see leaves that emerge distorted, puckered, or abnormally shaped and shoot tips that curl inward and fail to extend. Either way, heavy infestations sap vigour and can stunt new growth.

What Causes It (and Why Bud Mites Matter Most)

Spider mites are a hot-and-dry-weather problem, exploding when trees are stressed and dusty. The fig bud mite is the one to respect: besides distorting growth, it is the primary carrier of fig mosaic virus, moving it from infected trees to healthy ones. So mite control on figs is partly cosmetic and partly disease management, and that second role is the reason not to shrug them off.

Is It Serious?

Spider mite damage alone is usually cosmetic to moderate, sapping vigour in a bad year but rarely fatal. Bud mites are more consequential because of the virus they carry. Both are worth controlling, and the good news is that the same basic program handles both while protecting the beneficial predatory mites that provide free, ongoing control.

My Treatment Plan

Spray dormant-season horticultural oil at around 2 percent before bud break to smother overwintering mites and eggs.
Use a sulphur-based miticide or insecticidal soap during the season, targeting leaf undersides where mites feed.
Prune out and destroy distorted shoot tips in early spring; the bud mites are developing inside them.
Mist foliage on hot days. Spider mites hate humidity, and a light misting disrupts them.
Avoid broad-spectrum insecticides, which wipe out the predatory mites that otherwise keep pest mites suppressed for free.

⚠️ Do not reach for the strong stuff

Broad-spectrum insecticides often make mites worse by killing their natural predators, letting the fast-breeding pest mites rebound unchecked. Stick to oils, sulphur, and soaps, and let beneficial mites do the heavy lifting.

Preventing It Next Season

A single dormant-season oil spray each spring is the backbone of prevention, dramatically lowering the starting population before mites can build. Keep trees unstressed with steady watering, since drought-stressed and dusty trees are spider mite magnets, and stay away from broad-spectrum sprays so beneficials thrive. Because bud mites spread virus, also follow good propagation hygiene: never take cuttings from mite-distorted, virus-suspect wood.

Not sure it’s mites? Distorted leaves and stippling can look like virus, thrips, or nutrient issues. Check your tree’s symptoms against all 18 conditions with the free interactive tool.

Run the Symptom Checker

Frequently Asked Questions

How do I know if my fig tree has mites?

Look for tiny stippling, silvery speckling, or bronzing across the leaves, fine webbing on the undersides (spider mites), or distorted, puckered new leaves and curled shoot tips (bud mites). Mites themselves are almost invisible to the naked eye; hold a white sheet of paper under a leaf and tap it, and you may see tiny specks moving.

Do fig mites spread disease?

Yes. The fig bud mite (Aceria fici) is the main vector of fig mosaic virus, carrying it from tree to tree. That makes mite control about more than cosmetic leaf damage; keeping mite populations down is a key part of limiting the spread of an incurable virus through your collection.

What kills fig mites?

A dormant-season horticultural oil spray (around 2 percent) before bud break knocks back overwintering mites, and during the season a sulphur-based miticide or insecticidal soap applied to leaf undersides controls active populations. Avoid broad-spectrum insecticides, which kill the predatory mites that keep pest mites in check.

Why are my fig leaves distorted and puckered?

Fig bud mites feeding inside developing buds and shoot tips cause new leaves to emerge distorted, puckered, and abnormally shaped, and shoot tips to curl and fail to extend. Pruning out and destroying affected shoot tips in early spring removes both the damage and the mites developing inside them.

How do I prevent spider mites on figs?

Spider mites thrive in hot, dry, dusty conditions, so mist the foliage on hot days since they hate humidity, keep trees well watered to reduce stress, and avoid dusty locations. Preserve natural predatory mites by not spraying broad-spectrum insecticides, and a dormant oil spray each spring keeps overwintering numbers low.