Gonolobus suberosus grows in the shadows between things: the brushy borders of bottomland woods, the edges of thickets along creek banks, places where the soil stays moist and some overhead canopy filters the sun. It is a member of the milkweed family, and while its small copper-brown flowers lack the showiness of Asclepias, they do their work for pollinators quietly and with purpose. The vine can reach 10 feet given something to climb, sending out tendrils from stem tips to grip trees, shrubs, or wire supports with a light but persistent hold.

Two varieties exist: var. suberosus in and east of the Appalachians, and var. granulatus to the west. Both tolerate the same range of conditions — moist sandy soils, partial to full sun, and good drainage despite their affinity for damp ground. As a garden plant it rewards a naturalistic approach: planted near native shrubs or at the base of a rough fence, it layers into the landscape rather than dominating it. The angular seed pods that give the plant its common name are worth noticing in late summer, shaped like nothing else in the vine world.