Groundnut
Apios americana
Also listed as Glycine apios, Apios apios
Also known as American Groundnut, Hopniss, Indian Potato
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A native North American vine that produces chains of small purple flowers followed by edible tubers. Highly valued in permaculture for nitrogen fixation, groundcover potential, and nutritious underground nodules resembling groundnuts.
Why grow it
Groundnut offers a dual-purpose alternative to more commonly cultivated nitrogen-fixing legumes, combining soil improvement with an edible tuber crop in a single perennial vine. Unlike annual cover crops, it establishes gradually to provide persistent ground coverage while building soil fertility through its nodulating root system. The tubers develop underground along rhizomes and require less external input than many cultivated root vegetables once established in suitable conditions.
Watch out for
Tuber harvest requires careful digging to avoid damaging the interconnected chain of nodules, and incomplete removal can lead to re-sprouting in subsequent seasons. Plants may take 2-3 years to produce substantial tuber yields, so patience is needed before evaluating productivity. In cooler climates, a long growing season is necessary for adequate tuber development before frost.
Overview
- Form
- Growth Rate
- Size
- Dormancy
- Family
- Fabaceae
Native to the United States
Native Range
Eastern North America
Native to: Alabama, Arkansas, Colorado, Connecticut, Delaware, Florida, Georgia, Iowa, Illinois, Indiana, Kansas, Kentucky, Louisiana, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, Mississippi, North Carolina, Nebraska, New Hampshire, New Jersey, New York, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, Tennessee, Texas, Virginia, Vermont, Wisconsin, West Virginia
Seasonality
Bloom Season
Harvest Season
Edible Parts
Season of Interest
Notable Cultivars
No widely recognized named cultivars exist; wild populations are occasionally collected and grown, with tuber size and flavor varying by source.
Climber
Vines that climb the layers above on a support.
Succession Role
Tolerances & Soil
Flood Tolerance
Deer Resistance
Inferred from USDA browse palatability
pH Range
Soil Texture
Establishment & Care
- Establishment
- Maintenance
- Years to Bearing
- Propagation
A native North American vine that produces chains of small purple flowers followed by edible tubers. Highly valued in permaculture for nitrogen fixation, groundcover potential, and nutritious underground nodules resembling groundnuts.
Climate Match for your location
See how well Groundnut grows in your area.
Enter your ZIP code and we'll show you how this plant fits your local climate.
Why grow it
Groundnut offers a dual-purpose alternative to more commonly cultivated nitrogen-fixing legumes, combining soil improvement with an edible tuber crop in a single perennial vine. Unlike annual cover crops, it establishes gradually to provide persistent ground coverage while building soil fertility through its nodulating root system. The tubers develop underground along rhizomes and require less external input than many cultivated root vegetables once established in suitable conditions.
Watch out for
Tuber harvest requires careful digging to avoid damaging the interconnected chain of nodules, and incomplete removal can lead to re-sprouting in subsequent seasons. Plants may take 2-3 years to produce substantial tuber yields, so patience is needed before evaluating productivity. In cooler climates, a long growing season is necessary for adequate tuber development before frost.
Overview
- Form
- Growth Rate
- Size
- Dormancy
- Family
- Fabaceae
Native to the United States
Native Range
Eastern North America
Native to: Alabama, Arkansas, Colorado, Connecticut, Delaware, Florida, Georgia, Iowa, Illinois, Indiana, Kansas, Kentucky, Louisiana, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, Mississippi, North Carolina, Nebraska, New Hampshire, New Jersey, New York, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, Tennessee, Texas, Virginia, Vermont, Wisconsin, West Virginia
Seasonality
Bloom Season
Harvest Season
Edible Parts
Season of Interest
Climber
Vines that climb the layers above on a support.
Succession Role
Tolerances & Soil
Flood Tolerance
Deer Resistance
Inferred from USDA browse palatability
pH Range
Soil Texture
Establishment & Care
- Establishment
- Maintenance
- Years to Bearing
- Propagation
Similar climbers you might consider:
Enter your ZIP code to see top native species and strong climate fits for you.
Companion Planting
Plants well with
Notable Cultivars
No widely recognized named cultivars exist; wild populations are occasionally collected and grown, with tuber size and flavor varying by source.