Hypericum kalmianum Sunny Boulevard ('Deppe'PBR)
Kalm St John's wort [Sunny Boulevard]
A semi-evergreen shrub reaching around 1m tall and wide. It has pairs of narrow blue-green leaves and bowl-shaped yellow flowers in summer
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Size
Ultimate height
0.5–1 metresTime to ultimate height
2–5 yearsUltimate spread
0.5–1 metresGrowing conditions
Moisture
Moist but well–drained, Well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green Grey Silver | |||
|---|---|---|---|---|
| Summer | Yellow | Green Grey Silver | ||
| Autumn | Green Grey Silver | |||
| Winter | Green Grey Silver |
Position
- Full sun
- Partial shade
Aspect
East–facing or North–facing or South–facing or West–facing
Exposure
Exposed or Sheltered Hardiness
H4Botanical details
- Family
- Hypericaceae
- Native to GB / Ireland
- No
- Foliage
- Evergreen or Semi evergreen
- Habit
- Bushy
- Potentially harmful
- Fruit are ornamental - not to be eaten. Wear gloves and other protective equipment when handling. Pets: Fruit are ornamental - not to be eaten - see the HTA guide to potentially harmful plants for further information and useful contact numbers
- 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
Trade
How to grow
Cultivation
Grow in any moist but well drained soil, in sun or partial shade
Propagation
Propagate by softwood cuttings (greenwood) or semi-ripe cuttings in summer
Suggested planting locations and garden types
- Cottage and informal garden
- Coastal
- Low Maintenance
- Banks and slopes
- Flower borders and beds
Pruning
Pests
Generally pest-free
Diseases
May be susceptible to a rust
Get involved
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