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Adiantum tenerum

Previously known as:

  • Adiantum assimile
  • Adiantum extensum
  • Adiantum littorale
Description

The brittle maidenhair fern is a herbaceous perennial species that is native to Florida as well as the tropics and subtropics of Central and South America. It has a rhizomatous root system and grows in shaded, moist, limestone ledges in wet tropical climates. This fern has delicate and lacy fronds that are triangular in shape. The fronds are divided into many leaflets and arranged on both sides of a central rachis. Its common name is derived from its leaflets brittle texture. The brittle maidenhair fern is a member of the ribbon-fern family (Pteridaceae). 

This fern prefers bright, indirect light to full shade, and moist, well-drained peat-based potting mix with perlite or sand with an acidic pH. Water the fern when the top 1-inch of soil feels dry. Warm temperatures between 60 to 75 degrees are recommended. Avoid cold drafts and sudden temperature changes. The humidity level should be between 50 to 70%. The best method of propagation is division  

This fern can grow up to 18 inches tall and 24 inches wide and has a delicate arching and cascading habit. Its fronds are bright green with black stems, and the leaflets are fan-shaped. The spores are carried under the margins flaps. 

In warm climates consider this plant as a bedding or border planting, specimen, groundcover, or understory. In cooler climates, the brittle maidenhair fern could be used as an indoor planting for your home or office as a container planting, hanging basket, or used in a terrarium. . 

Insects, Diseases, and Other Plant Problems: Monitor for spider mites and aphids. Overwatering or inadequately drained soil can cause root rot. Direct sunlight can scorch the delicate leaves. 

 

More information on Adiantum.

See this plant in the following landscape:
Cultivars / Varieties:
  • 'Bessoniae'
    10 to 12 inches tall, young fronds are pink, forms rounded fronds, slow growing, requires more light
  • 'Bicolor'
    new fronds are peachy-pink then mature to green
  • 'Farleyense'
    bronze pink fronds that turn to a light green
  • 'Lady Moxam'
    weeping, bright green fronds with fan-shaped leaflets that have fringed margins
  • 'Peacock'
    young fronds are bronze colored and mature to green
  • 'Scutum Roseum'
    new leaves are peach-pink, mature to green, delicate, fan-shaped fronds
'Bessoniae', 'Bicolor', 'Farleyense', 'Lady Moxam', 'Peacock', 'Scutum Roseum'
Tags:
#arching#houseplant#specimen#fern#herbaceous#deer resistant#ornamentals#non-flowering#groundcover#border planting#green leaves#understory planting#tropical feel#easy to grow houseplant#perennial#erect#partial shade#container
 
Cultivars / Varieties:
  • 'Bessoniae'
    10 to 12 inches tall, young fronds are pink, forms rounded fronds, slow growing, requires more light
  • 'Bicolor'
    new fronds are peachy-pink then mature to green
  • 'Farleyense'
    bronze pink fronds that turn to a light green
  • 'Lady Moxam'
    weeping, bright green fronds with fan-shaped leaflets that have fringed margins
  • 'Peacock'
    young fronds are bronze colored and mature to green
  • 'Scutum Roseum'
    new leaves are peach-pink, mature to green, delicate, fan-shaped fronds
'Bessoniae', 'Bicolor', 'Farleyense', 'Lady Moxam', 'Peacock', 'Scutum Roseum'
Tags:
#arching#houseplant#specimen#fern#herbaceous#deer resistant#ornamentals#non-flowering#groundcover#border planting#green leaves#understory planting#tropical feel#easy to grow houseplant#perennial#erect#partial shade#container
  • Attributes:
    Genus:
    Adiantum
    Species:
    tenerum
    Family:
    Pteridaceae
    Life Cycle:
    Perennial
    Country Or Region Of Origin:
    Tropical and Subtropical America
    Distribution:
    Native: Bahamas, Belize, Brazil, Cayman Islands, Colombia, Costa Rica, Cuba, Dominican Republic, El Salvador, Guatemala, Haiti, Honduras, Jamaica, Leeward Islands, Mexico, Nicaragua, Puerto Rico, Trinidad-Tobago, United States--Florida, Venezuela, and the Windward Islands. Introduced: Andaman Islands, Caroline Islands, India, Malaya, Mariana, Philippines, Solomon Islands, Sri Lanka, Taiwan, United States--Hawaii, and Vanuatu.
    Play Value:
    Easy to Grow
    Dimensions:
    Height: 1 ft. 0 in. - 1 ft. 6 in.
    Width: 1 ft. 0 in. - 2 ft. 0 in.
  • Whole Plant Traits:
    Plant Type:
    Fern
    Houseplant
    Perennial
    Habit/Form:
    Arching
    Cascading
    Growth Rate:
    Slow
    Maintenance:
    Low
    Texture:
    Medium
  • Cultural Conditions:
    Light:
    Deep shade (Less than 2 hours to no direct sunlight)
    Partial Shade (Direct sunlight only part of the day, 2-6 hours)
    Soil Texture:
    High Organic Matter
    Soil pH:
    Acid (<6.0)
    Soil Drainage:
    Good Drainage
    Moist
    Available Space To Plant:
    12 inches-3 feet
    USDA Plant Hardiness Zone:
    9a, 9b, 10a, 10b, 11a, 11b
  • Fruit:
    Fruit Description:
    No fruits. Produces spores.
  • Flowers:
    Flower Description:
    Non-flowering.
  • Leaves:
    Leaf Color:
    Green
    Leaf Feel:
    Smooth
    Leaf Type:
    Fronds
    Leaf Shape:
    Pinnatifid
    Leaf Margin:
    Lobed
    Hairs Present:
    No
    Leaf Length:
    > 6 inches
    Leaf Width:
    > 6 inches
    Leaf Description:
    The fronds are light green, arching and smooth. The leaf blade is in a trowel shape and pinnate. It measures 5 to 24 inches long and equally as wide. It is 3 pinnate, and the rachis or stem is straight. The segments are fan-shaped, and the apex is rounded and lobed with narrow incisions.
  • Stem:
    Stem Color:
    Black
    Stem Is Aromatic:
    No
    Stem Description:
    The stems are black and wiry.
  • Landscape:
    Landscape Location:
    Container
    Houseplants
    Design Feature:
    Border
    Specimen
    Resistance To Challenges:
    Deer