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THE GARDEN SAGEA library of living things
Wildlife & landscape pests · Western North Carolina field companion

Twospotted spider mite

Tetranychus urticae

Twospotted spider mite · red form with fine silk
Twospotted spider mite · red form with fine silkGilles San Martin ↗ · CC BY-SA 2.0
Photo contextA magnified red-form female on a bean leaf. Color varies; the familiar green form is not the only appearance.

Fine stippling and silk can reveal mites thriving in hot, dry conditions.

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Landscape reference
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In the landscape.

Plants & places

Many flowering plants, shrubs, and other ornamentals.

Recognize the damage

Tiny pale spots progress to bronzing or drying leaves; heavy infestations develop fine webbing.

Before you act

Tap affected foliage over white paper, inspect moving specks, and compare fresh injury on several leaves.

A sensible first response

Reduce drought and dust stress and wash reachable foliage where appropriate. Preserve predators; broad insecticide use can worsen mite problems.

When to look

Often troublesome during warm, dry weather; protected locations can extend activity.

In Western North Carolina

A broad-host concern in WNC borders and containers; mites are arachnids, not insects.

Identification, lookalikes & further notes

Identification

Minute mites often have two dark internal spots; a hand lens is needed, and color varies with season.

Lookalikes & limits

Lace bugs leave dark fecal specks; predatory mites can be present too. Webbing alone is not a species diagnosis.

In the garden

Tiny pale spots progress to bronzing or drying leaves; heavy infestations develop fine webbing.

What would help next

Record the host plant, date, fresh damage, and a clear photograph of the animal or insect. A damage match narrows the search; it does not establish an identification.

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