The pests named for calamondin, a common potted citrus, are spider mites, scale insects, citrus leafminer and aphids, according to NC State Extension (calamondin). Colorado State University Extension, writing about houseplants in general, says spray oils are the most effective treatment for scale and for spider mites, and that sticky cards and vacuuming help with whiteflies. This page uses those two sources and does not recommend specific chemical products.
The pests named for citrus
| Pest | Signs (Colorado State) | Controls the source describes |
|---|---|---|
| Scale | Honeydew and dieback (soft scale); leaf spotting and dieback without honeydew (armored scale) | Spray oils are most effective; picking or rubbing for small infestations; treatment must cover a full generation of two to four months |
| Spider mites | White flecks near leaf veins on the underside, graying or bronzing, webbing, leaf drop | Repeated water jets and higher humidity; horticultural oil is the most effective spray; soaps are only marginally effective |
| Aphids | Honeydew, wilting, distorted new growth | Water washing, crushing by hand, yellow sticky traps for winged adults |
| Whiteflies | Sap feeding, leaf drop, honeydew; nymphs hard to see on leaf undersides | Sticky cards for adults, vacuuming on small plants; oils, neem and soap can help with nymphs |
| Citrus leafminer | Named by NC State; no signs or controls on that page | Not covered by the sources read |
Check and quarantine
Colorado State says new plants should be quarantined in a separate area for at least three weeks, then inspected carefully, and that plants under stress are more susceptible to insect and mite injury. Inspect leaf undersides, since several of these pests hide there.
Humidity and spider mites
Colorado State says hot, dry sites make spider mite problems more likely and that increasing humidity around the plant is among the most effective controls. NC State describes calamondin as preferring high humidity. See Calamondin Indoor Care.
Spray cautions
Colorado State says to use only pesticides labeled for houseplants and to follow the label precisely, to avoid spraying plants already stressed by temperature extremes or drought, and to keep aerosols at least 18 inches from the plant. Horticultural oils work mainly by smothering and have no residual effect, so repeat treatment may be needed. It says imidacloprid is highly effective on whiteflies and aphids but can harm bees.
Diseases
NC State lists citrus canker, sooty mold, citrus greening and root rot for calamondin. Sooty mold grows on honeydew, which ties it to the sap-feeding pests above. The pages do not give home treatments for citrus canker or greening.
Pets
The ASPCA lists lemon, lime, orange and grapefruit as toxic to dogs and cats, so keep any sprays and the plant itself away from pets. See Are Citrus Plants Toxic to Cats and Dogs?. Pest treatments for gardenias and jasmine are in Gardenia Pests Indoors and Jasmine Pests Indoors.
Frequently asked questions
What pests attack indoor citrus?
NC State names spider mites, scale insects, citrus leafminer and aphids for calamondin. Colorado State adds whiteflies as a common houseplant pest.
What kills scale on citrus?
Colorado State says spray oils are the most effective treatment for both soft and armored scale, and that picking or rubbing works for small infestations.
Does humidity help with spider mites?
Yes. Colorado State says increasing humidity is among the most effective controls, along with repeated water jets.
Are sprays safe around pets?
The sources read here do not cover pet safety of sprays. Follow the product label and ask a veterinarian.
Sources read for this page
Last reviewed 15 October 2026. Written by Md. Firozur Rahman. This page gives general guidance; see the Disclaimer. Back to the Citrus hub.
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