Nectria Canker

Canker Diseases - Hardwoods

Cankers caused by Nectria / Neonectria

Neonectria canker

Cankers caused by Neonectria ditissima. Old name for the same fungus is Neonectria galligena (and an older name is Nectria galligena)


Nectria cinnabarina on a thornless and seedless cultivar of honey locust.


Sporodochia producing asexual sores are produced on the cankers.


Nectria cinnabarina sporodochium. This cushon-shaped asexual fruiting body swells when wet and produces asexual spores.

Perithecia of N cinnabarina

Perithecia of Nectria cinnabarina clustered on old sporodochia.

Honey locust thorns Seed pods of Honey Locust

The wild type honey locust has large thorns and lots of seed pods. Cultivars selected that are thornless and seedless are very susceptible to cankers caused by Nectria cinnabarina.