|All of a sudden my mature tomato plants are getting yellow spots looking at the leaves from the top but they are brown spots from the underside. whats up?
|Answer from NGA
July 13, 2009
|Hmmm... could be either leaf mold (light yellowish areas on upper surface corresponds with olive-brown fungal masses on lower surface) or Powdery mildew (Leveillula) yellow lesions on the upper surface with a light powdery fungal sporulation on the lower surface. Ortho Multipurpose Fungicide or Fertilome Broad Spectrum Fungicide should help. Good luck with your tomatoes.
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