Vascular Streak Dieback
Ceratobasidium theobromae (syn. Oncobasidium theobromae)
7 host plants
Last updated
Data Coverage 3 of 6 dimensions
This disease caused by Ceratobasidium theobromae affects Disanthus cercidifolius but details about symptoms, management, and significance in the PNW remain limited. The disease is uncommon on ornamental hosts in western Washington.
The most practical approach is to reduce the conditions vascular streak dieback needs to thrive. Prune for better airflow, water at the base rather than overhead, and remove infected material promptly. For high-value plants or recurring problems, preventive treatments timed to protect new growth during the infection window can make a measurable difference.
Quick Reference
Causal Agent
Ceratobasidium theobromae (syn. Oncobasidium theobromae)
Host Plants
7
Management
Cultural Controls
- Prune Asian pears during dry periods in the winter, or delay pruning until spring or summer. Summer pruning also helps slow down overly vigorous trees. Thinning flower spurs during dry periods reduces bloom, helps improve fruit size, and may reduce the amount of disease observed. Avoid planting Asian pears in frost pockets or low-lying areas. Do no
Host Plants (7)
Cercis canadensis Eastern Redbud Cercis canadensis var. alba White Flowered Redbud Cercis canadensis var. mexicana Mexican Redbud Cercis chinensis Chinese Redbud Cercis occidentalis Western Redbud, California Redbud Cercis siliquastrum Judas tree, Mediterranean Redbud, Love Tree Disanthus cercidifolius Redbud, Hazel