Hypericum 'Rowallane'
St John's wort 'Rowallane'
'Rowallane' is an upright medium-sized semi-evergreen shrub with arching branches bearing ovate leaves and large, bowl-shaped, deep golden-yellow flowers to 7cm in width
Buy this plant
Size
Ultimate height
1.5–2.5 metresTime to ultimate height
5–10 yearsUltimate spread
0.5–1 metresGrowing conditions
Moisture
Moist but well–drained, Well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green | |||
|---|---|---|---|---|
| Summer | Yellow | Green | ||
| Autumn | Yellow | Green | ||
| Winter | Green |
Position
- Full sun
- Partial shade
Aspect
North–facing or East–facing or South–facing or West–facing
Exposure
Exposed or Sheltered Hardiness
H4Botanical details
- Family
- Hypericaceae
- Native to GB / Ireland
- No
- Foliage
- 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
Accepted
How to grow
Cultivation
Grows well in moist but well-drained soil in sun or partial shade
Propagation
Propagate by semi-hardwood cuttings
Suggested planting locations and garden types
- Cottage and informal garden
- Low Maintenance
- Banks and slopes
- Flower borders and beds
- Ground cover
Pruning
Pests
Generally pest-free
Diseases
May be susceptible to a rust and honey fungus (rarely)
Get involved
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.