Citrus Red Mite Infestation on Indoor Orange Tree

Jenny's 3-foot indoor orange tree shows chewed leaves and white webbing. A photo reveals a white, spiky shell-like structure on a branch—identified as citrus red mites (Panonychus citri).

Identification and Treatment

Citrus red mites are tiny arachnids that feed on leaf undersides, causing stippling, bronzing, and leaf drop. The "spiky shell" is likely a concentration of mites and their webbing. The white webbing on leaves confirms spider mite activity.

Alcohol-Soap Spray Treatment

Mix: 1 part rubbing alcohol + 5 parts water + squirt of liquid dish soap.

Application: Spray entire plant—all leaf surfaces (top and bottom), stems, and soil surface—until dripping wet. Thoroughness is critical; missing even a few mites allows rapid reinfestation.

Timing: Treat in early morning or evening to avoid leaf burn. Repeat in 7-10 days if needed. One thorough treatment often suffices.

Prevention

• Inspect new plants carefully before introducing
• Maintain adequate humidity (mites thrive in dry air)
• Regularly shower foliage with lukewarm water
• Isolate infected plants during treatment

For comprehensive indoor plant pest management, email wcreed@HorticulturalHelp.com for free articles on identifying and treating common houseplant pests.