Are potato leaves poisonous?
Yes, they are poisonous. Potato leaves, flowers, sprouts and green or “sun-scalded” potatoes contain a glycoalkaloid that is a natural defense mechanism to protect the plant from predators. I believe the name of the glycoalkaloid is solanine, and is also found in the leaves of tomatoes. I do not advise this, but you can leave a potato in the sunlight for some days until it turns green. Then cook and eat it. You probably won’t die, but the headache you’ll get might make you wish you had. Solanine toxic effects tarket the gastrointestinal, liver, heart. Eating potato leaves can, in fact, kill you.