Viewing post #1485197 by ZenMan

katesflowers said:Can you tell me when to spray fungicide? My seedlings are 2" high, no signs of any problems yet, but every other year usually do have the above blight & mildew. I planted saved seed from last years' crop. And, this is an unusually wet year.

I wouldn't spray until you see a visible sign of a fungus infection. But then I wouldn't hesitate. A systemic fungicide lasts for several weeks. The label on the container should give you some idea about the expected frequency of application.

ZM