Phytophthora Root and Crown Rot
Phytophthora cinnamomi
4 host plants
Last updated
Data Coverage 3 of 6 dimensions
Root and crown rot caused by Phytophthora appears as wilting, decline, and eventual death of affected plants. Once established in soil, this disease is difficult to eradicate. Rotate to new land or grow resistant varieties if you want to return to planting. Remove infected plants immediately. Ensure excellent drainage to prevent future problems. Proper drainage and good site selection are critical to prevent root disease problems. Monitor plants for early signs of decline or wilting.
Avoid reusing pots from a previous crop. If pots must be reused then wash off all debris and soak in a sanitizing solution or treat with aerated steam for 30 min.
Quick Reference
Causal Agent
Phytophthora cinnamomi
Host Plants
4
Management
Cultural Controls
- Avoid reusing pots from a previous crop.
- If pots must be reused then wash off all debris and soak in a sanitizing solution or treat with aerated steam for 30 min.
- Provide good drainage for plants in beds, fields, or containers.
- Place containers on gravel beds (4 inches or more deep) to allow drainage.
- Do not place containers on poly sheets; they can prevent containers from draining and allow contaminated drainage water to spread from the base of one container to another.
- Avoid planting in areas where boxwood and other Phytophthora hosts have previously died.