American Groundnut


  • USDA Zones 4 to 9 (Find Your Zone)
  • Full Sun to Part Shade
  • Moist Soils
  • 8 to 16 Feet Long
  • Edible Tubers
  • Butterfly Host Plant
  • Beautiful Flowers in Summer
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American Groundnut, Apios americana, is a perennial, herbaceous vine native to the Eastern United States and Canada. American Groundnut commonly grows in moist thickets, stream banks, or wetlands in full sun to part shade. A vigorous vine, American Groundnut grows between 8 and 16 feet long. Highly attractive purple flowers, reminiscent of wisteria, bloom in summer. Groundnut has a long history of use as a food crop in the Americas. Native Americans dug the tubers to be fried or boiled and eaten much like a potato. American Groundnut is also commercially cultivated in Japan. Each vine produces a string of small tubers, up to 1 inch in diameter. Best grown in humus rich, moist soil in full sun. Needs some support, such as a trellis or fence, to climb.

Photo: Lady Bird Johnson Wildflower Center

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