Variegated Holly Leaf Discoloration: Treating Fungal Leaf Spot

Identifying the Problem

Reddish-yellow blotches on mature leaves of variegated holly typically indicate fungal leaf spot, often caused by Cercospora species. New leaves naturally emerge reddish, but established leaves changing color signal disease.

Treatment Protocol

1. Fungicide application: Use a product containing propiconazole or chlorothalonil. Spray to runoff every 10–14 days during active growth.
2. Sanitation: Remove and bag all fallen leaves—do not compost. Spores splash from debris to reinfect.
3. Water management: Irrigate at base only, in morning hours. Avoid wetting foliage.

Expectations

Existing spots won't disappear, but new growth should emerge clean. Continue preventive sprays in spring as leaves unfurl.

Alternative Options

If these fungicides aren't available in your region, contact your local extension for approved alternatives.