Asplenium scolopendrium 'Angustatum'

RHS Plant Profile

hart's tongue fern 'Angustatum'

Ferns

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A compact, evergreen fern growing to 45cm tall. Rosette-forming, erect to arching leaves are narrow, glossy, and bright green with ruffled edges

Position

Full shade, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity: 2–5 years
Max Spread: 0.1-0.5 metres
Max Height: 0.1-0.5 metres

Growing Conditions

Chalk Clay Loam Sand

Moisture: Moist but well–drained
pH: Alkaline or Neutral

Position

Full shade Partial shade

Aspect: North–facing or West–facing or East–facing
Exposure: Exposed or Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

H1A: under glass all year (>15C)
H1B: can be grown outside in the summer (10 - 15)
H1C: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20): H6

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Aspleniaceae
Native to GB/Ireland: No
Foliage: Evergreen
Habit: Bushy
Genus: Asplenium are evergreen ferns with short, usually erect rhizomes bearing a rosette of slightly leathery fronds which may be simple, pinnate to 3-pinnate
Name Status: Accepted

How to Grow

Cultivation

Grow in humus-rich, moist but well-drained soil, with added grit, in partial shade. See how to grow ferns for further advice

Propagation

Propagate by division, or propagate by sowing spores as soon as ripe at 15°C

Suggested planting locations and garden types

Cottage and informal garden
Patio and container plants
City and courtyard gardens
Flower borders and beds
Ground cover
Underplanting of roses and shrubs

Pruning

Dead or damaged fronds may be removed as necessary

Pests

Generally pest-free outdoors

Diseases

May be susceptible to a rust in mild, damp winters