Golden Chain Tree Leaf Spots: Cercospora Fungus Management

Golden chain tree has brown spots on leaves. Owner asks if diseased and treatable.

Diagnosis: Cercospora Leaf Spot

Common fungal disease: circular/angular gray-brown spots with dark margins. Spots may drop out (shot-hole appearance). Causes premature leaf drop but minimal health impact.

Management Options

• No spray needed in most cases — cosmetic only.
• If spraying: Start at bud break, repeat every 2 weeks for 2 months. Fungicides: chlorothalonil (Daconil/Bravo), fixed coppers, mancozeb, maneb, zineb.
• Cultural control: Rake and remove fallen leaves to reduce spores next year.

Expert does not recommend spraying — damage is slight and temporary.