Pink jasmine 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 Pink jasmine (Jasminum polyanthum), using what its sources say about pests and diseases and humidity and 3 problems recorded for it.
Sources last read 14 September 2026.
Jasminum polyanthum, the many-flowered jasmine, pink jasmine, or white jasmine, is a species of flowering plant in the olive family Oleaceae, native to China and Myanmar. A strong evergreen twining climber, it is especially noted for its abundant, highly fragrant pink to white flowers. Wikipedia, CC BY-SA 4.0
Native range: SC. China to Myanmar (subtropical).
What Pink jasmine’s sources say that bears on this
- Pests and diseases
- In a greenhouse, mealybugs, scale insects and aphids can occur. Diseases: rarely, honey fungus.RHS · read 13 September 2026
- Humidity
- ASHRAE recommends indoor relative humidity between 30% and 60%Penn State Extension · read 13 September 2026
How this shows up on a Pink jasmine
Hard, rounded scale on the undersides of the leaves
Rows of small, hard scales sit where the veins of the pink jasmine are thickest, and the surface below them is glossy with honeydew.
RHS lists scale insects among the pests it may attract. The insect settles under a waxy shell and feeds on sap for life, so a colony builds quietly along the stems.
Telling it apart: Stickiness below the bumps. Scale drips honeydew; a leaf spot is dry.
RHS · read 13 September 2026Small white woolly insects tucked into the leaf joints
The pink jasmine 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: Where the white is. Mealybugs gather in joints and under leaves; a powdery coating across the top of a leaf is mildew.
RHS · read 13 September 2026Sticky buds and shoot tips crowded with small insects
Aphids gather on the undersides of new leaves and around buds on the pink jasmine, leaving honeydew and shed skins behind.
RHS lists aphids among the pests it may attract. They feed on the sap of soft new growth, which distorts it, and they multiply quickly without mating.
Telling it apart: Where they sit. Aphids crowd soft tips and buds; scale sits still on older stems.
RHS · read 13 September 2026Possible causes, likeliest first for a Pink jasmine
Most likely mealybugs
Ranked higher because Pink jasmine'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 pink jasmine 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
Ranked higher because Pink jasmine's recorded problems point this way.
- Hard, rounded scale on the undersides of the leaves RHS
Why: Scale insects settle in one place under a hard or waxy shell and feed on sap.
What to try:
- Move the pink jasmine 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 pink jasmine does not move.
Most likely aphids
Ranked higher because Pink jasmine's recorded problems point this way.
- Sticky buds and shoot tips crowded with small insects RHS
Why: Aphids cluster on soft new growth and flower buds, where the sap is easiest to reach.
What to try:
- Rub them off with fingers, or rinse them off in a sink or shower.
- Repeat every few days while new ones appear.
What would settle it: Look for the pale shed skins among the insects. Aphids molt as they grow, and the skins are left behind in the colony.
Less likely for a Pink jasmine, still possible
Questions
- What usually causes pests on a Pink jasmine?
- For Pink jasmine: mealybugs, scale insects and aphids.
- How can I tell which one it is on my Pink jasmine?
- 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 Pink jasmine's sources say about its pests and diseases?
- RHS: In a greenhouse, mealybugs, scale insects and aphids can occur. Diseases: rarely, honey fungus.
- What does this look like on a Pink jasmine?
- Rows of small, hard scales sit where the veins of the pink jasmine are thickest, and the surface below them is glossy with honeydew. Telling it apart: Stickiness below the bumps. Scale drips honeydew; a leaf spot is dry.
Other plants that show pests
African violetIrregular notches bitten from leaf edges by an insect pest
Barberton daisyCurled, sticky new leaves with green or black insects: aphids
Bearded irisRagged holes and slime trails: a slug or snail pest
Bigleaf hydrangeaClusters of small soft insects on the shoot tips and buds: aphids
Bird of paradiseDull, finely mottled leaves and faint webs: spider mites
Blue passion flowerPale stippled leaves and tiny moving dots underneath: a mite pest
Something else wrong with the Pink jasmine?
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.