Mahonia oiwakensis subsp. lomariifolia

RHS Plant Profile
lomaria-leaved mahonia

Synonyms

Berberis lomariifolia
Mahonia lomariifolia

Award of Garden MeritPlants for pollinators
Shrubs

An erect large evergreen shrub to 3-4m, with long, pinnate leaves with spiny leaflets. Flowers bright yellow, slightly scented, in dense, erect, clustered racemes to 25cm in length from late autumn into winter, followed by blue-black berries

Position

Full shade, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

2.5-4 metres

Max Spread

1.5-2.5 metres

Size

Time to Maturity
10–20 years
Max Spread
1.5-2.5 metres
Max Height
2.5-4 metres

Growing Conditions

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

Position

Full shade Partial shade
Aspect
South–facing or North–facing or West–facing or East–facing
Exposure
Sheltered
Hardiness
H4

Colour & Scent

Fragrance Flower
Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Berberidaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Bushy
Potentially harmful
Berries are ornamentalnot to be eaten. Wear gloves and other protective equipment when handling
Genus
Mahonia are evergreen shrubs with leathery, pinnate leaves which are often spine-toothed, and clustered racemes of sometimes fragrant yellow flowers, sometimes followed by black or purple berries
Name Status
Correct
Plant Range
SW China, Myanmar

How to Grow

Cultivation

Grows well in moderately fertile, humus-rich soil. Will tolerate full sun if the soil is not too dry. Provide shelter from cold, drying winds. See mahonia cultivation

Propagation

Propagate by seed sown in containers in autumn or as soon as ripe. Stratified seeds germinate freely. Root semi-ripe cuttings in late summer or autumn

Suggested planting locations and garden types

  • Cottage and informal garden
  • Wildlife gardens
  • Low Maintenance
  • Flower borders and beds

Pruning

Pruning group 8

Pests

Generally pest-free

Diseases

Generally disease-free