Hypericum × cyathiflorum 'Gold Cup'

RHS Plant Profile

St John's wort 'Gold Cup'

Dorling Kindersley Ltd

Synonyms

Hypericum beanii 'Gold Cup'
Hypericum patulum 'Gold Cup'

Shrubs

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A bushy shrub up to 1.5m high, with arching branches and deciduous, lance-shaped, mid-green leaves, up to 8cm long, and pyramidal cymes of up to nine cup-shaped, golden yellow flowers, 5-6cm across, in summer; bees may visit the flowers for pollen

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

1-1.5 metres

Max Spread

1.5-2.5 metres

Size

Time to Maturity: 5–10 years
Max Spread: 1.5-2.5 metres
Max Height: 1-1.5 metres

Growing Conditions

Chalk Clay Loam Sand

Moisture: Moist but well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun Partial shade

Aspect: South–facing or West–facing or East–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): H4

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Hypericaceae
Native to GB/Ireland: No
Foliage: Deciduous
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

Grow in moderately fertile, moist but well-drained soil, in sun or partial shade

Propagation

Propagate by softwood cuttings or semi-ripe cuttings in summer

Suggested planting locations and garden types

City and courtyard gardens
Cottage and informal garden
Low Maintenance
Banks and slopes
Flower borders and beds
Wall side borders

Pruning

Pruning group 1 (little or no pruning of trees and shrubs) or pruning group 6 (deciduous shrubs that flower from midsummer onwards)

Pests

Generally pest-free

Diseases

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