Iris crocea · Perennial
Vine weevil: Apply biological nematodes to the soil in late summer or hand-pick adult weevils at night.
Slugs and snails: Use physical barriers like copper tape or organic pellets containing iron phosphate to protect foliage.
Bacterial soft rot: Ensure well-drained soil and avoid waterlogging; cut away affected tissue and disinfect tools.
Iris leaf spot: Remove and dispose of infected leaves and clear all leaf debris at the end of the year.
Iris rust: Pick off lightly infected leaves to slow spread and maintain good air circulation around plants.