Black Spots on Weeping Willow: Late-Season Leaf Spot Management

Black spots on willow leaves in late season = **fungal leaf spot** (common, rarely serious). Since leaf drop is imminent, **no treatment needed now**.

Fall Sanitation (Critical)

• **Rake and destroy ALL fallen leaves** (burn, bury, bag).
• Removes overwintering spores (inoculum) for next spring.

Spring Preventive Program (If Recurrent)

• **Start at bud break** (leaves unfurling).
• **Spray 3x at 2-week intervals** until leaves fully expanded.
• **Fungicides:** Copper (Hi-Yield, Ferti-lome) or mancozeb (Bonide, Southern Ag, Dragon).
• **Follow label exactly.**

Cultural Practices

• **Avoid overhead irrigation**—wet foliage spreads spores.
• **Thin canopy** for air flow.
• **Fertilize moderately**—excess N promotes succulent, susceptible growth.

**Prognosis:** Leaf spots are cosmetic; they rarely threaten tree health.