A case of Late Blight has been confirmed in New Hampshire — from Becky Sideman, UNH Cooperative Extension:
Unfortunately, NH has joined the ranks of neighboring states MA and ME, with a confirmed case of late blight. UNHCE Plant Health Specialist Cheryl Smith identified late blight today on both potato and tomato from a farm in Cheshire county.
With the unsettled weather, spores can spread quickly. Growers concerned about late blight should have protectant fungicides on potato and tomato. For photos, management tactics and more, please visit:
If you suspect that you have this disease, please send photos for preliminary identification, or bring a sample into the plant diagnostic lab.