Mile-a-minute is an herbaceous, annual, trailing vine that can reach lengths of six meters or more. Its stems are covered with barbs which are also present on the underside of the leaf blades. The light green-colored leaves are triangle-shaped and alternate along the stem. Iridescent blue berry-like fruits are produced beginning in mid-summer and continuing until the plants are killed by frost in the fall. The seeds within these fruits can remain viable in the soil for up to six years.