06/18/2026
Late Blight has a reputation for being fast-moving. What often gets lost is how much time growers have before it arrives โ and how few use that window to get ahead of it.
In Idaho, Maine, Michigan, Wisconsin, Minnesota, and the Pacific Northwest, canopy closure is approaching or just underway. That's when Late Blight conditions start stacking up.
By the time lesions show up in the field, the window to prevent spread has already closed.
Spectrum's Potato Alert Package monitors leaf wetness and temperature conditions to flag both Early Blight and Late Blight risk before it becomes visible โ using real data from your WatchDog station, not generalized regional forecasts.
June is the right time to be watching. Not July, when it's time to react.
Insect models are included in the same package.
๐ in comments to learn more about the Potato Alert Package!