Leaf and Stem Blight
Pseudonectria buxi (asexual: Volutella buxi) and P
2 host plants
Last updated
Pachysandra foliage develops blotches and twigs die back, with visible fungal fruiting bodies. Pseudonectria buxi and related fungi attack stressed or injured plants. Prune out dead growth, improve drainage, minimize humidity above 85%, and ensure good air circulation. Maintain proper soil pH (6.8-7.5) and provide light shade.
Remove blighted tissue promptly, cutting well below visible symptoms. Improve air circulation by thinning dense growth. Avoid overhead watering, especially during bloom and new growth periods when tissues are most susceptible. For recurring problems, preventive fungicide applications timed to protect new growth can reduce infection, but cultural controls should be your first approach.
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Management
Cultural Controls
- Prune out and burn dead branches. Remove dead leaves from crotches areas inside the canopy. Minimize wounding especially when new growth is present. Maintain good air circulation and drainage. Avoid high humidity (>85%) for long periods. Grow plants in well-drained media or soil with a pH between 6.8 and 7.5. Light shade of 20% can also reduce inju