Iris leaf spot (also called Heterosporium leaf spot) is the most common disease of iris in Virginia. It is caused by the fungus Cladosporium iridis (syn. Heterosporium iridis). Leaf spotting is most conspicuous on the upper half of the leaf following bloom. Although this pathogen is most common on bulbous iris, it can also cause severe damage to rhizomatous iris, and has also been reported on Gladiolus, Freesia and Narcissus species.

Have you ever wondered if it is possible to enjoy the beauty of bulbs in the middle of winter? The answer is definitely yes! Many people are familiar with the hourglass-shaped vase filled with water and topped with a hyacinth bulb, or a low bowl filled with several Paper White narcissus, and the popular boxed amaryllis bulb as a welcome winter holiday gift. Most bulbs can be forced but additional planning is required in order to have a successful period of blooms.