My Black Eyed Susans leaves get brown spots sis's don't what is it
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Brown spots are a sign of funds from to much moisture.Cut off the infected leaves and spray them down with a fungicide
Hi there, the most common cause for brown spots on black-eyed Susans is a fungal disease called Septoria leaf spot which normally infects tomatoes. Use a copper-based fungicide on the plants when the spots emerge and continue treating them on a schedule to prevent infection.