symptoms
Symptoms
- circleBlack streaking or ring patterns on leaves and stems
- circleSeverely stunted, deformed new growth
- circleBlackened, distorted flowers
help
Causes
Caused by a virus (Helleborus net necrosis virus), spread mainly by aphids feeding on infected plants, and through propagation from infected stock.
healing
Treatment
There is no cure; affected plants should be dug up and destroyed promptly to prevent aphids from spreading the virus to healthy hellebores nearby.
shield
Prevention
Buy hellebores from reputable, virus-tested sources, control aphids promptly, and avoid propagating from plants showing any symptoms.