The green stink bug's color is typically bright green, with narrow yellow, orange, or reddish edges. It is a large, shield-shaped bug with an elongate, oval form and a length between 13 to 18 mm. Both adults and nymphs have large stink glands on the underside of the thorax extending more than half-way to the edge of the metapleuron. They discharge large amounts of this foul-smelling liquid when disturbed.
It is found in orchards, gardens, woodlands and crop fields throughout North America, feeding with their needle-like mouthparts on the juices of a wide variety of plants from May until the arrival of frost.