Are rhubarb leaves really poisonous?
The leaves of rhubarb are poisonous when ingested, the stalk a culinary delight, and the roots were long revered for their medicinal properties.
Rhubarb is often sold with some leaves on the stalks; simply trim them off and discard. (They are not toxic to touch). Rhubarb is a good source of vitamin C as well as other nutrients, but because it is mouth-puckeringly tart, it is generally cooked with generous amounts of sugar (or another sweetener).