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Groundnut

Groundnut

Apios americana

vine part shade💧💧 moderate waterZone 4bZone 9b

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.

Overview

Form
Climbing
Growth Rate
moderate
Size
3–1′ tall × 1–2′ wide
Dormancy
deciduous

Tolerances & Soil

low

Flood Tolerance

high
Zone 4bZone 9b
1471013
ColderWarmer
Zone range: Zone 4b to Zone 9b

pH Range

67.5
7.0
3.556.589
pH range: 6 to 7.5

Soil Texture

Coarse, Medium, Fine

Seasonality

Bloom Season

J
F
M
A
M
J
J
A
S
O
N
D

Harvest Season

J
F
M
A
M
J
J
A
S
O
N
D

Season of Interest

SummerFall

Climber

Vines that climb the layers above on a support.

Succession Role

early successional

Native to the United States

Native Range

Eastern North America

Native to: Maine, New Hampshire, Vermont, Massachusetts, Rhode Island, Connecticut, New York, New Jersey, Pennsylvania, Delaware, Maryland, Virginia, West Virginia, Ohio, Michigan, Indiana, Illinois, Kentucky, Tennessee, North Carolina, South Carolina, Georgia, Florida

Function & Care

nitrogen fixerediblewildlife benefit
Nitrogen Fixer · Moderate

Edible Parts

root

Establishment & Care

Establishment
moderate
Maintenance
low
Years to Bearing
2 years
Propagation
tuber, seed

Notable Cultivars

No widely recognized named cultivars exist; wild populations are occasionally collected and grown, with tuber size and flavor varying by source.