How can I tell whether saved spuds are disease-free?
Last year my potatoes lived and died healthily, as far as I could see. My tomatoes got a bad case of early blight after the potato tops died. I dug potatoes before frost and only thought later about whether this could allow blight spores to infest the tubers. The potatoes we've eaten this winter haven't shown characteristic early blight lesions--they look healthy (better than what often get from the ag store). If they don't have visible blight damage after a year in storage can I assume they are healthy and replant them, or am I inviting another round of early blight? Any advice would be much appreciated.