Nerve plant pests, webbing or sticky leaves: causes and what to do
6 results in the diagnosis tree begin with pests, 5 of them marked likely when the answers fit. They are ordered here for Nerve plant (Fittonia albivenis), using what its sources say about pests and diseases, humidity and watering and 2 problems recorded for it.
Sources last read 14 September 2026.
Fittonia albivenis is a species of flowering plant in the family Acanthaceae, native to the rainforests of Colombia, Peru, Bolivia, Ecuador and northern Brazil. An evergreen perennial, it is notable for its dark green foliage with strongly contrasting white or red veins. Wikipedia, CC BY-SA 4.0
Native range: S. Trop. America (wet tropical). Also sold as Jewel Plant, Mosaic Plant, painted net-leaf, Silver Fittonia, Silver Nerve and Silver Nerve Plant.
What Nerve plant’s sources say that bears on this
- Pests and diseases
- Can be troubled by mealybugs and greenhouse red spider mite. Diseases: grey moulds can occur.RHS · read 13 September 2026
- Humidity
- ASHRAE recommends indoor relative humidity between 30% and 60%Penn State Extension · read 13 September 2026
- Watering
- Water twice a week.NC State Extension · read 13 September 2026During growth, water moderately so the potting mix stays just moist, and feed monthly with a balanced liquid fertiliser.RHS · read 13 September 2026
How this shows up on a Nerve plant
Fine pale speckling on the leaves, then webbing at the tips: spider mites
Speckling spreads over the nerve plant until the leaves look washed out and bronze, with fine threads at the growing points.
RHS lists spider mites among the pests it may attract. Heated rooms suit them: dry, warm air speeds each generation, and the damage builds within weeks.
Telling it apart: Tap a leaf over white paper. Dots that crawl are mites; dust stays still.
RHS · read 13 September 2026Small white woolly insects tucked into the leaf joints
The nerve plant carries white, cottony specks in its crevices, and growth slows. Leaves beneath the colonies turn sticky and, in time, dull or yellow.
RHS lists mealybugs among the pests it may attract. They feed on sap and shed the excess as sticky honeydew, and a colony tucked into the joints spreads before it is noticed.
Telling it apart: Wipe a tuft with a cotton swab. An insect smears or crawls; a mineral deposit or a hair does not.
RHS · read 13 September 2026Possible causes, likeliest first for a Nerve plant
Most likely spider mites
Ranked higher because Nerve plant's recorded problems point this way.
- Fine pale speckling on the leaves, then webbing at the tips: spider mites RHS
Why: Spider mites feed on individual leaf cells, and each emptied cell shows as a pale speck.
What to try:
- Move the nerve plant away from other plants.
- Wash the leaves, top and underside, with a strong spray of water in a shower or sink.
What would settle it: Hold a sheet of white paper under a leaf and tap the leaf. Tiny specks that move across the paper are mites.
Most likely mealybugs
Ranked higher because Nerve plant's recorded problems point this way.
- Small white woolly insects tucked into the leaf joints RHS
Why: Mealybugs are soft insects that cover themselves in white wax, which gives the cottony look.
What to try:
- Move the nerve plant away from other plants.
- Wipe off every insect you can see with a cotton swab dipped in rubbing alcohol, testing a single leaf first.
What would settle it: Touch a tuft with a cotton swab. If a small, pale, oval insect is underneath, it is a mealybug.
Most likely scale insects
Why: Scale insects settle in one place under a hard or waxy shell and feed on sap.
What to try:
- Move the nerve plant away from other plants.
- Scrape the scales off with a fingernail or a soft brush, then wipe the stems and leaves.
What would settle it: Push a bump gently with a fingernail. Scale comes away and leaves a mark; a bump that is part of the nerve plant does not move.
Less likely for a Nerve plant, still possible
Questions
- What usually causes pests on a Nerve plant?
- For Nerve plant: spider mites, mealybugs and scale insects.
- How can I tell which one it is on my Nerve plant?
- What can you see? Fine webbing, and tiny pale speckles on the leaves; White, cottony tufts in the leaf joints; Small brown or pale bumps on stems and leaves that do not move; Clusters of small, soft insects on the new growth; Tiny dark flies around the soil; Sticky, shiny residue, but no insect I can see.
- What do Nerve plant's sources say about its pests and diseases?
- RHS: Can be troubled by mealybugs and greenhouse red spider mite. Diseases: grey moulds can occur.
- What does this look like on a Nerve plant?
- Speckling spreads over the nerve plant until the leaves look washed out and bronze, with fine threads at the growing points. Telling it apart: Tap a leaf over white paper. Dots that crawl are mites; dust stays still.
Other plants that show pests
Polka dot plantClusters of small soft insects on the shoot tips and buds: aphids
AlocasiaFine pale speckling on the leaves, then webbing at the tips: spider mites
Aloe veraSticky leaves and immobile shell-like insects on the stems
Areca palmDull, finely mottled fronds and faint webs: spider mites
Arrowhead plantCurled, sticky new leaf blades with green or black insects: aphids
Asparagus fernCurled, sticky new fronds with green or black insects: aphids
Something else wrong with the Nerve plant?
What this does not cover
This page orders a decision tree's results using a plant's sourced care. It has not seen your plant, its pot or its window, and two problems at once are common: that is the usual reason a confident answer turns out wrong. The questions in the diagnosis tool narrow it further than a list can.