Adiantum pedatum

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Adiantum pedatum L.

Adiantaceae

Life form: perennial

Exposure: half shade   5

Moisture: moist

Soil: sandy loam - Soil: sandy clay - Soil: loamy clay - Soil: peat

Arrangement: basal
Leaves: decidious

Shape: ovate

Division: tripinnate

    

Shape: not specified
Fruit: not specified

 

Inflorescence: not specified

Petals: not specified
Habit: not specified

Growth form: stemless

Taxonomy

Divisio:
Polypodiophyta
Subdivisio:
Polypodiophytina
Classis:
Polypodiopsida
Subclassis:
Polypodiidae
Ordo:
Parkeriales

Adiantum pedatum, commonly known as five finger fern, American maidenhair, is a perennial.

Naming

Adiantum pedatum was described by Carl Linnaeus in 1753. The name is considered as validly published.

Taxonomy

Adiantum pedatum is a species in the genus Adiantum which contains approximately 135 to 458 species and belongs to the family of the Pteridaceae (Brake Family).

Characteristics

Adiantum pedatum - habitus
Adiantum pedatum - leaves

Growth

The perennials have a stemless growth and reach heights of 30 to 40 centimetres. The plants reach a width of 0.6 to 1 metres.

Leaves

Adiantum pedatum is deciduous. The green, tripinnate leaves are basal. The leaflets are ovate and have dentate margins. The leaves are around 40 to 50 centimetres large. They turn an attractive dark red in autumn.

Flowers and Fruits

Adiantum pedatum flowers from June to September.

The perennials produce fruits in summer.

Root System

The plants form rhizomes.

Distribution

Adiantum pedatum is native to the Northeast of the US.

Cultivation

The perennials prefer a half-shady situation on moist soil. The substrate should be sandy-loamy, sandy clay, loamy clay or peaty soil with a pH between 4 and 6. They tolerate temperatures down to -29°C (USDA zone 5). The plants are suited for the shores areas of and in natural standing bodies of water and natural streams.

Classification after Prof. Dr. Sieber

  • banks
  • open areas
  • woods (soil usually rich in organic material)

Tolerance of special soil conditions

  • medium: calcareous soil

Uses

Adiantum pedatum is considered excellent cultivar. The recommended planting distance is 45 centimetres, the perennials are best planted in groups of 3 to 5. Suited for rockeries and for mixed borders, as well as suited as cemetery plant, groundcover, cut flowers and as indoor plant.

Maintenance and Propagation

The plants need little to no maintenance if grown under suitable conditions.

Propagate by division.

Cultivars

Pests and Diseases

Scale insects that sit on the undersides of the leaves and excrete honeydew can be controlled with insecticide or biologically with parasitic wasps.

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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