Delta Maidenhair Fern

Adiantum raddianum | Also known as: Adiatum cuneatum | Rating: 6 votes | Print / Pdf

Delta Maidenhair Fern: like a girl in high heeled shoes, this plant is not too good with the great outdoors and is best suited to being kept inside.

Adiantum raddianum or Maidenhair fern is an attractive fern, generally grown as a houseplant as it needs to be kept warm and likes a humid environment. Originally from Brazil and Venezuela, it has pretty triangle shaped leaflets and spindly arching black stems that resemble human hair, hence the name 'maidenhair'. It will spread fast and is easy to divide to create more plants. It can be hard to grow though as it needs a humid environment; most homes are not humid enough for this plant and the leaves will quickly turn brown if it gets too dry.

Rate it:
Known dangers?
  • no
Height [m]
  • 0.6
Spread [m]
  • 0.8
Dominant flower colour
  • Inconspicuous or absent
Flower Fragrance
  • No, neutral please
Foliage in spring
  • Green
Foliage in summer
  • Green
Foliage in Autumn
  • Green
Foliage in winter
  • Green
  • Yes, let it smell
Propagation methods
  • division
  • Spores
Growth habit
  • Arching
  • Clump-forming
  • Spreading
  • Acidic
  • Neutral
  • Alkaline
Hardiness zone
  • Z11
Heat zone
  • H12-10
Winter temperatures [°C]
  • 4
Heat days
  • 150 - 210
  • well-drained but frequently watered
  • poorly-drained
Soil type
  • sandy
  • Clay
  • chalky
  • loams
Sun requirements
  • Partial shade
  • Full shade
  • Sheltered
Standard category
  • Exotic, house plants & other
  • House plants
Grown for
  • Ornamental Foliage
Creative category
  • Kid Approved
  • For Beginners
  • We love the dark
  • Author's choice
Garden type
  • Indoor or winter garden
  • Cottage garden
  • Containers
Garden spaces
  • Flower beds
  • Underplanting
  • Shade
  • Borders
Gardening expertise
  • beginner
Time to reach full size
  • 2 to 5 years
1 Related plants