Treating Leaf Spot on Lavender Twist Redbud in Humid Climates

A three-year-old Lavender Twist Redbud in East Texas shows brown, drying leaf edges and yellowing each year. No insects are visible. The diagnosis: fungal leaf spot, common in high-humidity regions.

Treatment Protocol

1. Apply copper fungicide (available at garden centers) now, and repeat in 14–20 days.
2. Sanitation: Rake and remove fallen leaves to reduce spore load.
3. Preventive spray next spring: Apply copper fungicide just after flowers fade but before new leaves fully emerge. Avoid spraying open blooms.
4. Additional sprays may be needed in summer if humidity remains high.

Leaf spot won't kill the tree but ruins its appearance. Consistent treatment yields healthier foliage next season.