WebIris Leaf Spot Iris leaf spot disfigures leaves and weakens plants. About flowering time, infected leaves are dotted with small, brown spots. Water-soaked margins around the spots turn yellow. Spots later develop a grayish center with black fruiting tufts. The leafspot fungus overwinters in old leaves and produces new spores in the spring. Iris. A widespread, serious disease of iris is a leaf spot caused by the fungus Didymellina macrospora. This disease occurs on leaves of several species of iris (including the bulbous types), narcissus, and certain other … See more The first evidence of the disease is the appearance of very small brown spots surrounded by water-soaked margins that later turn yellow. Spots occur on either surface of leaves and … See more Removal of dead leaves from iris beds in the fall or winter will reduce disease level. When leaf spot severity is high, applications of fungicide in addition to sanitary measures will aid control. Contact your local county … See more

Iris, Bulbous and Rhizomatous ( Iris spp.)-Leaf Spot

WebThe problem is that this might prevent photosynthesis from beginning, which would result … http://dvis-ais.org/iris-fungus.html gps wilhelmshaven personalabteilung

Iris leaf spot Walter Reeves: The Georgia Gardener

WebIris leaf spot is caused by the fungus Cladosporium iridis and affects irises (Iris spp. and … WebAug 10, 2024 · Leaf spot. If your bearded irises have spotted leaves like those in the photo above, either bacterial or fungal leaf spot is the culprit. They’re hard to tell apart without a test from your extension agency. Both show up during periods of mild, wet weather, but the fungal type continues until temperatures get below freezing. gps wilhelmshaven