Drippy Dieback
Lonsdalea quercina subsp
13 host plants
Last updated
Drippy dieback causes branch death with characteristic dripping or sticky exudates. You notice branches dying back with gummy, oozing appearance. The condition appears stress-related or disease-induced. Prune out affected branches and provide proper tree care.
The most practical approach is to reduce the conditions drippy 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
Management
Scale insect presence; recent branch wounding; warm summer temperatures (ooze peaks July); susceptible red oak species (northern red oak most vulnerable)
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