Potato Blight Q

I don't know the answer to your question, but I would think that if you have blight that it would develop on both sides of the leaves pretty quickly.

Thanks for the link on blight. Very informative. I did not know that commercial potatoes are sprayed with paraquat.

Do you not worry, Mattie, blight spreads nicely overtime from anussuming shadows on the leaves into a nice, messy rot of a whole plant.

Spots on one side might be another thing though. It's hard to say.