Comptonia peregrina

RHS Plant Profile
sweet fern

Other common names

fern-leaved gale, shrubby sweet fern

Synonyms

Myrica asplenifolia
Comptonia asplenifolia

Shrubs

A small, suckering, deciduous shrub to around 1.5m tall with slender branches that are downy when young. Aromatic, olive-green leaves up to 10cm long are fern-like in appearance and divided into rounded leaflets. In spring, small, brown, male catkins up to 2.5cm long are borne before or as the leaves appear

Position

Full sun, Partial shade

Soil Types

Clay, Loam, Sand

Max Height

1.5-2.5 metres

Max Spread

1.5-2.5 metres

Size

Time to Maturity
5–10 years
Max Spread
1.5-2.5 metres
Max Height
1.5-2.5 metres

Growing Conditions

Clay Loam Sand
Moisture
Moist but well–drained
pH
Acid or Neutral

Position

Full sun Partial shade
Aspect
East–facing or South–facing or West–facing
Exposure
Exposed or Sheltered
Hardiness
H5

Colour & Scent

Fragrance Foliage
Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Myricaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Bushy
Genus
Name Status
Correct
Plant Range
E US

How to Grow

Cultivation

Grow in acidic or neutral, moist but well-drained soil in full sun or partial shade. Be aware of its ability to spread rapidly and form large colonies once established and site accordingly

Propagation

Propagate by root cuttings, layering or from suckers

Suggested planting locations and garden types

  • Coastal
  • Cottage and informal garden
  • Banks and slopes
  • Flower borders and beds

Pruning

Pruning group 1

Pests

Generally pest-free

Diseases

Generally disease-free