Iris: Leaf spot
Iris: Leaf spot categories: Bulbs Iris Iris Diseases Ornamentals revision date: 2023-02-09 12:00 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 thrives […]