Hypericum calycinum Fiesta ('Crowthyp'PBR) (v)

RHS Plant Profile
rose of Sharon [Fiesta]

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Synonyms

Hypericum calycinum 'Crowthyp'PBR
Hypericum calycinum Carnival

Shrubs
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An evergreen shrub to 30cm tall, spreading by runners. The arching, woody stems bear slender, dark green leaves with irregular, yellow-green margins; the new growth is bronze-flushed. In summer it produces buttercup yellow flowers at the stem tips

Position

Full shade, Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

1-1.5 metres

Size

Time to Maturity
2–5 years
Max Spread
1-1.5 metres
Max Height
0.1-0.5 metres

Growing Conditions

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

Position

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

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

  • H1A: under glass all year (>15C)
  • H1B: can be grown outside in the summer (10 - 15)
  • H1C: can be grown outside in the summer (5 - 10)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
  • H4: hardy through most of the UK (-10 to -5)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
  • H6: hardy in all of UK and northern Europe (-20 to -15)
  • H7: hardy in the severest European continental climates (< -20)
H5
Drought Resistance
Yes

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Hypericaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Suckering
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 well-drained soil in sun or partial shade. Drought tolerant once established. May have the potential to become a nuisance if not managed well

Propagation

Propagate by softwood or semi-ripe cuttings

Suggested planting locations and garden types

  • Low Maintenance
  • Ground cover
  • Banks and slopes

Pruning

See pruning group 6

Pests

Generally pest-free

Diseases

May be susceptible to a rust and honey fungus (rarely)