Esca, Young Esca, and Petri Disease
Phaeomoniella chlamydospora, Phaeoacremonium aleophilum, Fomitiporia mediterr...
2 host plants · Fungal
Last updated
This profile contains verified disease data from extension databases. Regional field notes and expert review are in progress.
Esca and petri disease cause internal wood discoloration and decline on grapevines. You see leaves with brown margins and fruit shriveling. The fungal disease significantly affects production. Remove infected vines and maintain pruning hygiene.
The most practical approach is to reduce the conditions esca, young esca, and petri disease 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
Pruning wounds from dormant season through early growth stage. Symptom development delayed 1-3+ years after initial infection.
Wet conditions in spring; spore dispersal to pruning wounds via rain splash.
Cultural Controls
- Prune only during dry periods
- Sterilize pruning equipment
- Remove and destroy infected vines
- Avoid wounds to trunk and main scaffolds