Dicentra eximia Torr.
Dicentra eximia, commonly known as Turkey Corn, is a low perennial that forms dense carpets.
Dicentra eximia was already described and the name validly published by John Bellenden Ker Gawler. It was John Torrey, however, who reclassified it into todays valid botanical systematics .
The perennials have a mat-forming habit and reach heights of 20 to 30 centimetres.
Dicentra eximia is deciduous. The bluish green, imparipinnate leaves are alternate. The lanceolate leaflets are serrate and petiolate. The leaves are around 10 to 20 centimetres large and have a glabrous surface.
Flowers and Fruits
Dicentra eximia produces racemes of nodding, dark dusky pink heart-shaped flowers from May to June.
Dicentra eximia is native to the eastern US.
The perennials prefer a half-shady situation on moderately moist soil. The substrate should be sandy-loamy or sandy clay soil with a pH between 4 and 6. They tolerate temperatures down to -29Â°C (USDA zone 5).
Classification after Prof. Dr. Sieber:
- woodland borders (soil usually rich in humus)
- woods (soil usually rich in organic material)
Tolerance of special soil conditions
- none: winter dampness
Dicentra eximia is considered a very valuable wild perennial. The recommended planting distance is 20 to 30 centimetres, the perennials are best planted in groups of 5 to 10. Suited for nature gardens, rockeries and for rooftop gardens, as well as suited as cemetery plant, groundcover, slope plant and as cut flowers.
Maintenance and Propagation
The plants need little to no maintenance if grown under suitable conditions.
- The leaves of the plant die back after flowering.
- Spreading by self-seeding.
- Winter protection from late frost.
- Root cuttings
Pests and Diseases
Honeydew, galls and distorted leaves are a sign for an infestation with aphids. Use an insecticide or control biologically , e.g. with parasitic wasps or predators such as Aphidoletes aphidimyza.
- 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.