Iris albicans · Perennial
Bacterial rhizome rot: Ensure excellent drainage and plant rhizomes partially exposed to prevent waterlogging.
Iris leaf spot: Remove and dispose of infected foliage at the end of the season to reduce overwintering spores.
Iris rust: Pick off lightly infected leaves early in the season to slow the spread of the fungus.
Ink disease: Dig up and destroy severely affected plants immediately to prevent soil contamination.
Viral infection: Remove and burn infected plants as there is no cure for viral infections.