Tomato late blight: Stop purple black spots that kill foliage

Late blight, a fungal disease that infects tomatoes, usually shows up in Oregon gardens as weather turns wet and humid, and it's dispersed by the wind and rain. This devastating disease kills tomato and potato plants, as well as peppers and eggplant, and usually does not arrive until mid-August or September.

According to Ross Penhallegon, Oregon State University Extension horticulturist in Lane County, the disease is holding off because of the current warm weather. Once it turns wet and cool, start looking for late blight, Penhallegon advises.

Read more in the Oregonian »