The RHS lists mealybugs, including root mealybug, among the possible pests of stephanotis, along with scale insects and glasshouse red spider mite. NC State Extension Gardener Plant Toolbox lists no pests, so the RHS is the main source. Colorado State says mealybugs show as sap feeding, leaf drop, sticky honeydew and cottony egg masses, and that swabbing with alcohol is the usual first step.
What the sources describe
| Item | What the source says |
|---|---|
| Pests named (RHS) | Scale insects, glasshouse red spider mite, mealybugs, root mealybug |
| Mealybug signs (Colorado State) | Sap feeding that weakens plants and causes leaf drop; sticky honeydew; cottony egg masses |
| Control (Colorado State) | Swab with alcohol, or use dilute alcohol (25 to 50 percent) or insecticidal soap |
| Limit | Alcohol and soap are contact-only and miss root-feeding stages |
Quarantine and checking
Colorado State says new plants should be quarantined for at least three weeks and inspected carefully, and that stressed plants are more susceptible. The RHS says the plant is generally disease free.
Cautions
Colorado State says to use only pesticides labeled for houseplants, that alcohol can burn leaves so a small area should be tested first, and that plants stressed by temperature extremes or drought should not be sprayed. This page does not recommend chemical products.
What the sources do not cover
Neither gives stephanotis-specific treatment, or says how to find root mealybugs short of unpotting. See Jasmine Pests Indoors for the general houseplant table.
Frequently asked questions
What pests attack stephanotis?
The RHS names scale insects, glasshouse red spider mite, mealybugs and root mealybug.
How do I treat mealybugs?
Colorado State says swab with alcohol, or use dilute alcohol or insecticidal soap.
Why do sprays miss some mealybugs?
Colorado State says alcohol and soap are contact-only and miss root-feeding stages.
Sources read for this page
- RHS plant details
- NC State Extension Gardener Plant Toolbox
- Colorado State University Extension (houseplant pests)
Last reviewed 15 October 2026. Written by Md. Firozur Rahman. This page gives general guidance and cannot diagnose a plant from a description; see the Disclaimer.
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