See also, update: July 29
OMAFRA staff have identified a suspected case of late blight in Simcoe County on potatoes. The sample has been submitted to Agriculture and Agri-Food Canada – Lethbridge, Alberta for lab confirmation.
To date, there are no reports of late blight in tomatoes in Ontario. Late Blight has recently been reported in potato and tomato fields in several Northeastern states.
For more information on identifying and managing late blight in tomatoes see: