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Alpine RockeryShrubs

Hypericum olympicum
  • RHS AGM

Mount Olympus St John's wort

H. olympicum is a dwarf, deciduous sub-shrub to 25cm in height, with erect stems crowded with small ovate, grey-green leaves. Flowers to 5cm in width, bright yellow, in small clusters

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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
5–10 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green Grey Silver
Summer Yellow Green Grey Silver
Autumn Green Grey Silver
Winter
Position
  • Full sun
  • Partial shade
Aspect

South–facing or West–facing or East–facing or North–facing

Exposure
Exposed or Sheltered
Hardiness
H4
Botanical details
Family
Hypericaceae
Native to the UK
No
Foliage
Deciduous
Habit
Bushy
Genus

Hypericum can be annuals, perennials, shrubs or trees, evergreen or deciduous, with usually paired leaves and showy yellow flowers with prominent stamens, followed by capsules, occasionally berry-like

Name status

Correct

Plant range
N Greece NW Turkey

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How to grow

Cultivation

Grows well in moist but well-drained soil in sun or partial shade

Propagation

Propagate by seed and semi-hardwood cuttings

Suggested planting locations and garden types
  • Patio and container plants
  • Rock garden
  • Cottage and informal garden
  • Gravel garden
  • Garden edging
Pruning

Pruning group 8

Pests

Generally pest free

Diseases

Generally disease free

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