Apios americana Medik.
Apios americana is a climber.
Apios americana was described by Friedrich Kasimir Medikus in 1787. The name is considered as validly published.
The climbers are comparatively fast-growing and short-lived. They produce a single stem and reach heights of 3 to 4 metres. The main growing season is in spring and summer.
Apios americana is deciduous. The dark-green, imparipinnate leaves are alternate. The lanceolate leaflets are entire and petiolate. The foliage is porous.
Flowers and Fruits
Apios americana produces racemes of showy, bordeaux pea-shaped flowers from July to September.
In summer the climbers produce brown legumes that are both edible and very ornamental.
Apios americana is native to eastern Canada, the Northeast of the US, the central Northeast of the US, the northern Prairie States of the US, Colorado, the southern Prairie States of the US, the Southeast of the US and Florida and is naturalized in Italy and France.
The climbers prefer a shady situation on moist to wet soil. They prefer soil with a pH between 6 and 7,5 and need a soil depth of at least 20 centimetres for good growth. They tolerate temperatures down to -40Â°C (USDA zone 3) and need a frost-free period of at least 20 weeks.
Tolerance of special soil conditions
- none: soil salinity
- low: drought
- high: anaerobic soil, calcareous soil
The ornamental value of Apios americana lies especially in its fragrance. The recommended planting distance is 65 to 120 centimetres.
Maintenance and Propagation
Propagate by sowing or by bulbils.
Pests and Diseases
- Walter Erhardt, Erich GÃ¶tz, Nils BÃ¶deker, Siegmund Seybold: Der groÃe Zander. Eugen Ulmer KG, Stuttgart 2008, ISBN 978-3-8001-5406-7. (Ger.)
- Christoper Brickell (Editor-in-chief): RHS A-Z Encyclopedia of Garden Plants. Third edition. Dorling Kindersley, London 2003, ISBN 0-7513-3738-2.