Cyrtomium macrophyllum

RHS Plant Profile
large-leaved cyrtomium
Ferns

An evergreen fern to 45cm tall, with spreading, broad fronds composed of opposite pairs of ovate leaflets (pinnae); tiny dark brown sori (spore-producing clusters) are scattered across the undersides. Grow in a well-drained, shady border, rock garden, or cool greenhouse

Position

Full shade, Partial shade

Soil Types

Chalk, 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 Loam Sand
Moisture
Well–drained
pH
Acid or Alkaline or Neutral

Position

Full shade Partial shade
Aspect
East–facing or North–facing
Exposure
Sheltered
Hardiness
H3

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Dryopteridaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Tufted
Genus
Cyrtomium can be tufted evergreen or deciduous ferns with simply pinnate leaves composed of sickle-shaped pinnae; spore-heaps are scattered over the lower surface of the frond
Name Status
Correct
Plant Range
E. Asia

How to Grow

Cultivation

Outdoors, grow in moderately fertile, humus-rich, well-drained soil in partial to full shade. In cold regions protect the crown with straw in winter. Under glass, grow in 1 part each loam, medium grade bark and charcoal, 2 parts sharp sand, and 3 parts coarse leaf mould, in bright, indirect light. See how to grow tender ferns outdoors for further advice

Propagation

Propagate by sowing spores at 16°C in late summer

Suggested planting locations and garden types

  • Rock garden
  • Conservatory and greenhouse
  • Flower borders and beds

Pruning

No pruning required

Pests

Generally pest-free

Diseases

Generally disease-free