spider mites on Anthurium
Quick answer
If your Anthurium has spider mites, the most likely cause is: Spider mites (Tetranychus urticae) infest Anthurium in low-humidity indoor environments (<40% RH). These tiny arachnids feed on leaf undersides, piercing cells and extracting sap, causing stippling, yellowing, and fine webbing. Anthurium's thin, velvety leaves show damage faster than thicker foliage. Mites reproduce rapidly in dry, warm conditions with bright indirect light.
Start here:
- 1. Isolate infested plant immediately to prevent spread to collection
- 2. Inspect undersides with 10x magnification—confirm tiny moving dots and fine silk webbing
Why Anthurium gets spider mites
Anthurium spp.
Spider mites (Tetranychus urticae) infest Anthurium in low-humidity indoor environments (<40% RH). These tiny arachnids feed on leaf undersides, piercing cells and extracting sap, causing stippling, yellowing, and fine webbing. Anthurium's thin, velvety leaves show damage faster than thicker foliage. Mites reproduce rapidly in dry, warm conditions with bright indirect light.
Other documented causes on anthurium:
- • Spider mites and thrips target Anthuriums due to their thin, velvety leaf texture which provides easy feeding access. Thrips (Thysanoptera) rasp leaf tissue and suck sap, causing silver stippling that appears as scattered yellow/brown spots with black frass (excrement) visible under magnification. Spider mites (Tetranychidae) colonize undersides, spinning fine webbing and causing stippled yellowing from cell destruction. Both pests exploit low-humidity environments (<60% RH) and spread rapidly in indoor conditions with poor air circulation.
How to reverse spider mites on Anthurium
- 1
Isolate infested plant immediately to prevent spread to collection
- 2
Inspect undersides with 10x magnification—confirm tiny moving dots and fine silk webbing
- 3
Blast leaves with strong water stream (shower) daily for 3-5 days to physically dislodge mites
- 4
Apply neem oil or insecticidal soap thoroughly to all leaf surfaces every 3-5 days for 3 cycles—ensure undersides are coated
- 5
Introduce predatory mites (Phytoseiulus persimilis) for biological control in severe cases
- 6
Monitor for 2 weeks; repeat treatment if stippling reappears
Keep spider mites off this Anthurium
Maintain 60-80% humidity via pebble trays or humidifiers. Quarantine new plants for 2 weeks. Inspect leaf undersides weekly with magnification. Avoid over-fertilizing which promotes soft susceptible growth.