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annual

Delta Maidenhair Fern

Adiantum raddianum

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Delta Maidenhair Fern (Adiantum raddianum) at Little Red Farm Nursery

Delta Maidenhair Fern foliage

Delta Maidenhair Fern foliage

(Photo courtesy of NetPS Plant Finder)

Height:  24 inches

Spread:  24 inches

Sunlight:  partial shade 

Hardiness Zone:  (annual)

Other Names:  Hair Fern

Description:

One of the most beautiful of our native ferns; bright green fronds open atop contrasting, fine black stems, becoming horizontal and layered; a lovely addition to the garden; likes bright diffused light, and does not do well in direct sun or deep shade

Ornamental Features

Delta Maidenhair Fern is primarily valued in the garden for its cascading habit of growth. Its fan-shaped compound leaves remain light green in color throughout the season. The black stems are very colorful and add to the overall interest of the plant.

Landscape Attributes

Delta Maidenhair Fern is an herbaceous annual with a shapely form and gracefully arching foliage. It brings an extremely fine and delicate texture to the garden composition and should be used to full effect.

This is a relatively low maintenance plant, and usually looks its best without pruning, although it will tolerate pruning. Deer don't particularly care for this plant and will usually leave it alone in favor of tastier treats. It has no significant negative characteristics.

Delta Maidenhair Fern is recommended for the following landscape applications;

  • Mass Planting
  • Rock/Alpine Gardens
  • General Garden Use
  • Groundcover
  • Naturalizing And Woodland Gardens

Planting & Growing

Delta Maidenhair Fern will grow to be about 24 inches tall at maturity, with a spread of 24 inches. Its foliage tends to remain dense right to the ground, not requiring facer plants in front. Although it's not a true annual, this slow-growing plant can be expected to behave as an annual in our climate if left outdoors over the winter, usually needing replacement the following year. As such, gardeners should take into consideration that it will perform differently than it would in its native habitat.

This plant should be grown in a location with partial shade or which is shaded from the hot afternoon sun. It prefers to grow in average to moist conditions, and shouldn't be allowed to dry out. It is particular about its soil conditions, with a strong preference for rich, alkaline soils. It is highly tolerant of urban pollution and will even thrive in inner city environments, and will benefit from being planted in a relatively sheltered location. Consider applying a thick mulch around the root zone over the growing season to conserve soil moisture. This species is native to parts of North America, and parts of it are known to be toxic to humans and animals, so care should be exercised in planting it around children and pets. It can be propagated by division.

 
 
Hardiness Zone Plant Height Minimum Sunlight Soil pH Preference
Characteristics
Massing  Rock  Garden  Groundcover  Naturalizing 
Applications
Texture  Plant Form  Bark 
Ornamental Features