Powdery Mildew vs. Aphids on Burning Bush

Identifying the White Coating

White powdery coating on leaves suggests powdery mildew. However, leaf curling points to aphids. Check leaf undersides for tiny green/yellow/black insects and associated ants.

Treatment

• Aphids: Blast with water 3x daily or use horticultural soap.
• Powdery mildew: Improve air flow; apply fungicide if severe. Control guide.

Note on Invasiveness

Burning bush (Euonymus alatus) is invasive in many regions; consider replacement with non-invasive alternatives.