Sticky Residue on Indoor Palm Fronds? It's Likely Mites

An indoor palm (possibly a queen palm) has a new frond coated in a sticky, honeydew-like film. Other fronds are clean. What causes this?

Insect Feeding, Not Plant Secretion

The sticky substance is excreted by tiny sap-feeding insects—most commonly spider mites. As they feed, they secrete a sugary waste that coats leaf surfaces.

Simple, Effective Treatment

• Wipe the affected frond thoroughly with isopropyl (rubbing) alcohol. This kills mites on contact.
• Monitor other fronds for signs of spread; treat promptly if residue reappears.
• Increase humidity around the palm—mites thrive in dry indoor air.

Why Alcohol Works

Isopropyl alcohol evaporates quickly, leaving no residue, and is safe for most palms when used as a spot treatment. It's a fast, non-toxic first line of defense against mite infestations.