What you will see
Blossoms and shoots suddenly turn black and hang as if scorched, sticky white fluid oozes from the infections; sunken cankers form.
The source says: it is among the most commonly damaged plants.
When to look
From late spring to autumnHow to protect
- Prevention
- Watch out for warm, damp springs; do not over-feed with nitrogen.
- By hand once detected; prune in winter dormancyCut out the infection 30–60 cm below the visible damage, expose the bark and check for brown staining; disinfect tools after every cut; burn the material.
- By hand after the main floweringRemove late secondary blossoms before they open.


















