Identifying and Treating Spider Mites on Burning Bush

When burning bush (Euonymus alatus) develops spider webbing and browning leaves that spread to adjacent plants, two-spotted spider mites are the likely culprit. These tiny arachnids thrive in hot, dry conditions and on plants in shaded locations.

Confirming Spider Mite Infestation

• Tap affected foliage over white paper — tiny moving specks indicate mites.
• Look for fine webbing on leaf undersides and between branches.
• Check for stippling (tiny yellow/white dots) on upper leaf surfaces.

Effective Treatment

1. Miticide application: Spray all shrubs thoroughly, especially leaf undersides and bark crevices. Use a registered miticide (not regular insecticide).
2. Repeat treatment: Apply again in 7-10 days to catch newly hatched mites.
3. Cultural controls: Increase humidity with periodic foliar rinsing; avoid drought stress.

Prevention

• Plant burning bush in full sun with good air circulation.
• Water deeply during dry periods — drought-stressed plants are more susceptible.
• Monitor regularly in summer for early detection.

Prompt miticide treatment combined with improved cultural conditions will halt damage and allow recovery. The clay soil amended for drainage and cypress mulch are appropriate — just ensure irrigation reaches the root zone effectively.