Overview
Adiantum diaphanum is a clump forming ferns in the genus Adiantum, part of the Pteridaceae family, with deciduous, semi evergreen foliage. Adiantum diaphanum grows best in full shade and partial shade, and tolerates most soils and any pH. Its UK hardiness is rated H6. Suggested uses include city and courtyard gardens, cottage and informal garden, patio and container plants, low maintenance, flower borders and beds and underplanting of roses and shrubs.
About
Adiantum diaphanum, the filmy maidenhair fern, is a species of fern in the genus Adiantum, native to East Asia and Australasia, from southern Japan south to New Zealand. It grows to 20 cm long at the most, with very dark green fronds covered with bristles. In the garden it prefers full shade and partial shade and most soil types. In UK gardens it is very hardy across most of the UK (RHS H6). Suggested uses include city and courtyard gardens, cottage and informal garden, patio and container plants, low maintenance, flower borders and beds and underplanting of roses and shrubs. It tolerates soil of any pH, moist but well-drained conditions and south-facing, east-facing and west-facing aspects. Plant in moist, humus-rich soil in shade.
Wikipedia contributors, CC BY-SA 4.0 — Adiantum diaphanum
Growing conditions
Best soil and position for Adiantum
- Sunlight
- Full shade, Partial shade
- Soil type
- Chalk, Clay, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- South-facing, East-facing, West-facing
- Exposure
- Sheltered
- UK hardiness
- H6
Plant details
Adiantum diaphanum size, habit and characteristics
- Plant type
- Ferns
- Habit
- Clump forming
- Foliage
- Deciduous, Semi evergreen
- Suggested uses
- City and courtyard gardens, Cottage and informal garden, Patio and container plants, Low Maintenance, Flower borders and beds, Underplanting of roses and shrubs
Care notes
Pruning and caring for Adiantum diaphanum
- Propagation
- Spores, Division
- Pest resistance
- Generally pest-free outdoors; may be susceptible to scale insects under glass
- Disease resistance
- Generally disease-free
Frequently asked questions
Where is the best place to plant Adiantum diaphanum?
Adiantum diaphanum prefers full shade and partial shade. It suits sheltered positions.
What soil does Adiantum diaphanum need?
Adiantum diaphanum is adaptable and grows happily in most soil types, including chalk, clay, loam and sand. It is happy in soil of any pH. Aim for soil that stays moist but well-drained.
Is Adiantum diaphanum hardy in the UK?
Adiantum diaphanum has an RHS hardiness rating of H6, meaning it is very hardy, tolerating -20 to -15°C across most of the UK.
How do I propagate Adiantum diaphanum?
Spores, Division.
More in the Adiantum genus
- Adiantum aethiopicumcommon maidenhair fern

- Adiantum bellum
- Adiantum formosumgiant maidenhair fern

- Adiantum reniforme
- Adiantum tenerum 'Farleyense'brittle maidenhair fern 'Farleyense'
- Adiantum tenerum 'Green Glory'
- Adiantum capillus-veneris var. fissum
- Adiantum platyphyllum