Columbine Leaf Mottling: Spider Mites in Hot, Dry Weather

Columbine (Aquilegia) in Zone 5a with mottled leaves in a hot summer has spider mites. They thrive in heat and low humidity; their feeding causes stippled, bronzed foliage.

Why Now?

Drought weakens the natural fungal predator of spider mites. Without moisture, the fungus dies; mites explode.

Fix: Increase Humidity

• Overhead water daily (morning) to wet foliage.
• Mulch heavily to conserve soil moisture.
• Spray with insecticidal soap (Safer brand) every 5–7 days—covers mites, safe for beneficials.

Don't Panic

Columbines are tough. A few days of misting and soap will reverse the damage. New growth will be clean.

Water the air, not just the soil.