See USABlight Map and check your tomatoes daily.">

OrgAnnex's mission is to promote organic food and gardening methods.

Late blight is a hard-to-manage disease caused by a funguslike pathogen that also targets potatoes. In fact, it's believed that recent outbreaks most likely stem from contaminated seed potatoes or potato tubers that were tossed in a pile, survived the mild winter, and sprouted this spring, full of disease-causing late-blight spores. Spotting late blight early isn't always easy, either—it resembles other tomato plant problems like drought stress, early blight, Septoria leaf spot, and gray mold, making it hard for gardeners to make a positive ID. See USABlight Map and check your tomatoes daily.

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