Iris

Iris: Leaf spot categories: Bulbs Iris Iris Diseases Ornamentals last review date: 2025-10-30 04:53 Iris leaf spotPhoto by: R.S. Byther Biology Leaf spot is caused by a fungus which overwinters on dead leaves and other plant material. Spores develop in spring and infect leaves. Several cycles can occur in warm, wet weather, and the disease […]

Iris: Bulb mite categories: Bulbs Iris Iris Insects Ornamentals last review date: 2025-10-30 04:56 Iris bulb mitesPhoto by: A.L. Antonelli Biology Bulb mites are a typical pest of iris in Washington both in the gardens and in storage. Injured or bruised bulbs are the most susceptible to damage. Not only do mites destroy bulb tissue, […]