Curly Willow Branch Dieback: Fungal Canker, Limited Options

N. California curly willows: one dead from tips down with dark brown circles on branches. Same spots on largest tree. Half watered, half dry field.

Likely Fungal Canker

Dark circular lesions = canker. No reliable cure.

Try

• Daconil fungicide foliar spray (protectant only)
• Concentrate on branches, wet bark well
• No good systemic fungicides for trees

Good luck.