Dicentra eximia

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Dicentra eximia Torr.

Fumariaceae

Life form: perennial
Usage: ornamental plant

Exposure: half shade   5

Moisture: moderately moist

Soil: sandy loam - Soil: sandy clay

Arrangement: alternate
Leaves: decidious

Shape: lanceolate

Division: imparipinnate

Shape: heart-shaped
Fruit: not specified

51D / dd7f8a 

Inflorescence: raceme

Petals: single
Habit: nodding

Growth form: mat-forming

Taxonomy

Divisio:
Magnoliophyta
Subdivisio:
Magnoliophytina
Classis:
Ranunculopsida
Subclassis:
Ranunculidae
Superordo:
Ranunculanae
Ordo:
Papaverales
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Dicentra eximia, commonly known as Turkey Corn, is a low perennial that forms dense carpets.

Naming

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 .

Taxonomy

Dicentra eximia is a species in the genus Dicentra which contains approximately 9 to 10 species and belongs to the family of the Fumariaceae (Fumitory Family).

Characteristics

Dicentra eximia - habitus
Dicentra eximia - flowers

Growth

The perennials have a mat-forming habit and reach heights of 20 to 30 centimetres.

Leaves

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.


Root System

Distribution

Dicentra eximia is native to the eastern US.

Cultivation

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 -29°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

Uses

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.

Propagation

  • Sowing
  • Division
  • Root cuttings

Cultivars

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.

Literature

  • Walter Erhardt, Erich Götz, Nils Bödeker, Siegmund Seybold: Der große 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.

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