Answer: It does sound like a disease - Southern blight produces the symptoms you describe. Southern blight occurs when temperatures are warm and there's lots of humidity. Even if your weather has been dry, enough humidity can be generated when the soil is wet. I think the best thing for you to do is to take a plant specimen to your local cooperative extension office for professional diagnosis. If it is a blight, you may be able to save the rest of your plants if you act quickly. Contact:
Lincoln County - UW Extension, 1106 E 8th Street, Merrill, WI 54452
Office Hours: M-F 8:15 am - 4:30 pm
Best wishes with your lilies!
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