Helleborus · Perennial
Hellebore leaf spot: Remove affected leaves promptly and cut back old foliage in autumn to reduce infection sources.
Hellebore black death: Dig up and destroy infected plants immediately as there is no cure for this viral disease.
Hellebore aphid: Encourage natural predators like ladybirds; tolerate light infestations or use targeted controls if severe.
Hellebore leaf miner: Remove and dispose of heavily mined leaves to reduce larval populations for the following season.
Slugs and snails: Use physical barriers like copper tape or organic pellets, and hand-pick pests at night.