Janice LeBoeuf, OMAFRA Vegetable Crop Specialist, Ridgetown

More photos and information on identifying late blight can be found at:

Vegetable Crop Update – late blight look-alikes

Ontario CropIPM

Cornell – Long Island late blight on tomato

Purdue late blight resources and news

A weekly late blight update from Cornell provides information on late blight confirmations in New York and surrounding states as well as a list of late blight resources online.

2 comments on “Late blight resources

  1. home grown tomatos with brown spot the size of the tomato on bottom, why are they like this? I am growing them in pots…thanks Ken

    • Sounds like blossom-end rot. Try to minimize problems by keeping a steady supply of moisture to the plant. Water stress triggers it; once triggered, it will develop (can’t reverse the damage).

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