Cylindrocarpon Root Rot
Cylindrocarpon spp. (now Ilyonectria spp.)
16 host plants
Last updated
This profile contains verified disease data from extension databases. Regional field notes and expert review are in progress.
Cylindrocarpon causes root rot and decline through root infection of stressed plants. You notice wilting and poor growth despite adequate watering. The fungus affects roots in poorly drained, waterlogged soils. Improve drainage and avoid waterlogging to prevent disease.
Root rots thrive in waterlogged soil, so drainage is your most important intervention. Avoid overwatering and ensure the planting site drains well. Remove severely affected plants to prevent spread to neighbors through root contact or contaminated soil. When replanting, choose resistant species or improve soil structure before putting anything back in the ground.
Quick Reference
Management
Cultural Controls
- Plant only disease-free plants.
- Inspect and discard any incoming diseased nursery stock.
- Amend soils with composted sawdust or bark mulch to provide good aeration for roots.
- Plant in beds raised so that the top of the bed is at least 12 inches above the surrounding soil.
- Plant at proper depth - not deeper than the plant grew in the nursery.
- Do not plant in soil with poor drainage or in areas that receive drainage from roads.