Late blight on tomato plant

Plant Diseases

Prevention and early identification are crucial to minimizing damage from disease in your garden and landscape. Cornell University and CCE Genesee's Master Gardeners have several resources available to help you implement best practices to avoid diseases, identify problems when they do occur and to choose appropriate strategies to minimize damage and further contamination.

For a comprehensive list of plant disease fact sheets visit Cornell’s Plant Disease Diagnostic Clinic website, where you’ll find detailed fact sheets in alphabetical order and instructions for collecting and submitting samples for identification or search through a list of diseases by crop.

What’s Wrong with My Plant?, a user-friendly tool available through the University of Minnesota Extension office, allows you to select a plant (including vegetables and fruits, annuals, perennials, trees, shurbs, and turf) and its symptoms and then view photos and brief descriptions of the likely cause.

Cornell University Long Island Horticultural Research & Extension Center has a page just for gardeners -

Lots of great resources for vegetable gardeners if you are trying to identify or manage diseases in your garden.


Janice Beglinger
Agriculture Outreach Coordinator
585-343-3040 x132

Last updated October 2, 2020