White Growth on Mulberry Branches: Signs of Decline

White Substance on Mulberry Tree Branches

A white, powdery coating on the small branches of your mulberry tree, accompanied by canopy thinning, often indicates an underlying problem rather than a primary fungal infection.

Likely Cause

The white material is typically a secondary fungus colonizing dead or dying tissue. The real issue may be internal decay, root stress, or environmental factors causing branch dieback.

Recommended Action

Inspect the trunk and major limbs for loose bark, cracks, or other signs of decay. Improve cultural conditions: ensure proper drainage, avoid overwatering, and consider a soil test. For a definitive diagnosis, consult a local arborist or send clear photos to an extension service.