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ADIANTUM raddianum

Image of Adiantum raddianum

James H. Schutte

Family

Pteridaceae

Botanical Name

ADIANTUM raddianum

Plant Common Name

Delta Maidenhair Fern

General Description

Delta maidenhair fern is an delicate-looking evergreen fern native to tropical North America, South America, and the West Indies. They have roughly triangular, 3- or 4-pinnate fronds with dark, black stalks emerging from short rhizomes. Newly emerged fronds are light green but darken with age. The sori are located at the edge of the leaflet where the tip the leaf tissue rolls over to enclose it.

Delta maidenhair fern should be grown in partial sun or diffused sunlight. The ideal environment for this fern would be in well-drained, consistently moist soil in a humid environment. It's not fussy about soil pH. Grow it in a greenhouse or outdoors in a shady border, woodland, along a stream, or in shady rock crevices; if hardy. In cool or dry winters it may become deciduous and rejuvenate with the return of spring warmth and watering.

Characteristics

  • AHS Heat Zone

    12 - 10

  • USDA Hardiness Zone

    9 - 11

  • Plant Type

    Fern

  • Sun Exposure

    Partial Shade

  • Height

    24"-36" / 61.0cm - 91.4cm

  • Width

    20"-40" / 50.8cm - 101.6cm

  • Native To

    Latin America and the Caribbean, Caribbean, Central America, South America

Growing Conditions

  • Soil pH

    Neutral, Alkaline

  • Soil Drainage

    Well Drained

  • Soil type

    Loam, Sand

  • Growth Rate

    Medium

  • Water Requirements

    Average Water

  • Habit

    Clump-Forming

  • Seasonal Interest

    Spring, Summer, Fall, Winter

Ornamental Features

  • Flower Interest

    None

  • Foliage Color (Spring)

    Green, Light Green

  • Foliage Color (Summer)

    Green, Light Green

  • Foliage Color (Fall)

    Green, Light Green

  • Foliage Color (Winter)

    Green, Light Green

  • Fragrant Flowers

    No

  • Fragrant Fruit

    No

  • Fragrant Foliage

    No

  • Bark or Stem Fragrant

    No

  • Repeat Bloomer

    No

  • Showy Fruit

    No

  • Edible Fruit

    No

  • Showy Foliage

    Yes

  • Foliage Texture

    Medium

  • Foliage Sheen

    Matte

  • Evergreen

    Yes

  • Showy Bark

    No

Special Characteristics

  • Usage

    Container, Groundcover, Houseplant, Rock Garden / Wall, Tropical

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Self-Sowing

    No