DES MOINES — The Iowa Department of Natural Resources is seeing a slightly higher-than-normal amount of walnut anthracnose this summer, causing some black walnut trees to yellow and lose their leaves earlier and more extensively than usual. Walnut anthracnose is a common fungal leaf disease. The fungus infects foliage and produces brown to black leaf spots, often followed by yellowing […]
The post Early leaf drop appearing in black walnut trees …
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