Apios americana (Groundnut, Potato Bean)


Botanical Information

FamilyFabaceae
GenusApios
Speciesamericana
SynonymsApios tuberosa. Glycine tuberosa.
CategoryWildflowers & Weeds
TypeVine
Ethnobotanical Uses
Disclaimer
The roots, seeds and seedpod are edible. The tubers were used in folk remedies for a cancerous condition known as "Proud Flesh" in New England. Nuts were boiled and made into plaster.

Details

USDA Hardiness Zone4b - 8b
USDA Hardiness Ref.
Canadian Hardiness Zone3
Canada Hardiness Ref.
RHS Hardiness ZoneH7 - H3
RHS Hardiness Ref.
Height4.7 - 6 m
GrowthFast
Flowering PeriodJune, July, August, September

Description and Growing Information

PropagationSeed, pre-soak for 3 hours in tepid water and sow February/March in a cold frame. Germinates in 1 - 3 months at 15°C. When large prick seedlings out into individual pots and grow in light shade in a greenhouse for first winter, planting in spring or early summer. Division, can be carried out at anytime of the year. Simply dig up roots, harvest tubers and replant.
CultivationFull sun and partial-shade. Well-drained, sandy and loamy soils with acidic, alkaline and neutral pH. Moist soils.
Notable SpecimensJoany's Woods, West Williams, Middlesex County, Ontario, Canada.
HabitatLow damp, bottomland, riparian woods and thickets.
Leaf DescriptionCompound (made up of 2 or more leaflets) and alternate with 1 leaf per node along the stem. The edges of the leaf blade are entire with no teeth or lobes.
Flower DescriptionThe flower is bilaterally symmetrical. 4 - 5 petals, sepals or tepals in the flower.
Fruit DescriptionThe fruit is dry and splits open when ripe. The length of the fruit is 60 - 120 mm.
Colour DescriptionThe flowers are a bluish-purple, greenish-brown and pinkish-red.

Photographs