Jiaogulan (Gymnostemma pentaphyllum) is a climbing tea herb native to mountainous or forested areas of Asia. Also known as sweet tea vine, it exhibits lobed leaves and inconspicuous greenish-yellow flowers close to the stem. Jiaogulan was originally mixed with black tea leaves to sweeten them, but has been marketed as an adaptogenic or tonic herb as well. It is a short-lived perennial in U.S. Department of Agriculture plant hardiness zones 8 to 10.
