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Shrubs

Hypericum revolutum

A half-hardy semi-evergreen shrub to 3m tall, with reddish-brown shoots and opposite pairs of elliptical leaves; the foliage has an aroma of curry when crushed. From summer to autumn it may produce cup-shaped yellow flowers with prominent tufts of stamens, however it is shy to flower in British gardens. Suitable only for a very sheltered position outdoors or cool greenhouse

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Ultimate height

2.5–4 metres

Time to ultimate height

10–20 years

Ultimate spread

1.5–2.5 metres

Chalk

Loam

Sand

Moisture

Well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun

Aspect

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)

Botanical 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: Correct
Plant range: SW Asia, Africa

How to grow

Cultivation

Under glass grow in peat-free, loam-based potting compost with added extra grit. Position in full light and water freely in the growing season, moderately at other times. Outdoors grow in freely-draining soil in full sun, or against a south-facing wall

Propagation

Propagate by seed or semi-ripe cuttings

Suggested planting locations and garden types

City and courtyard gardens
Climber and wall shrubs
Conservatory and greenhouse

Pruning

See pruning group 1

Pests

Generally pest-free

Diseases

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

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