Iris histrioides · Bulb
Bulb rot: Ensure well-drained soil and avoid overwatering; remove and discard affected bulbs immediately.
Slugs and snails: Use physical barriers like copper tape or apply iron phosphate-based pellets around the base.
Aphids: Spray off with a strong jet of water or treat with insecticidal soap if infestations are heavy.
Leaf spots: Improve air circulation and remove affected foliage to prevent fungal spread.
Thrips: Hang blue sticky traps nearby or apply a suitable insecticide during peak activity.