What's eating my kumquat?

Kumquat shares all common citrus pests — scale, leafminer, aphids, and spider mites — and is explicitly listed as a leafminer host. Grown indoors or in containers, kumquats also pick up mealybug and spider mites. Scale is typically the most persistent threat. Horticultural oil and insecticidal soap are the go-to controls.

Waxy or crusty bumps on bark and stems; sticky honeydew leads to black sooty mold coating leaves; reduced vigor and fruit quality. Apply horticultural oil at 2–3 tbsp per gallon; repeat at 10-day intervals; scrape visible scale off with a soft brush.

Silvery winding tunnels on new leaves; rolled and distorted flush growth; kumquat is a confirmed host species. Limit flush stimulation; allow parasitic wasps to provide natural control; spinosad on heavy new-flush infestations.

White cottony clusters at leaf junctions and in bark crevices; honeydew promotes sooty mold; potted kumquats especially vulnerable. Wipe off with alcohol-dipped cotton swab; apply neem oil or insecticidal soap; inspect roots of containerized plants for root mealybug.

Fine pale stippling on leaf surfaces; faint webbing under leaves in severe cases; worse in hot, dry or dusty conditions. Increase humidity; apply horticultural oil or insecticidal soap; mist foliage regularly on container-grown plants.