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Conservatory GreenhouseHouseplants

Hibiscus rosa-sinensis 'Cayenne Red'

Rounded bushy shrub with broadly lance-shaped, glossy dark-green, evergreen leaves; in summer and autumn bright red flowers, with yellow-anthered red stamens and a crimson throat, are borne in profusion from the leaf axils

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Ultimate height

1–1.5 metres

Time to ultimate height

5–10 years

Ultimate spread

0.5–1 metres

Loam

Moisture

Well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun
Partial shade

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)

H1B

Botanical details

Family: Malvaceae
Native to GB / Ireland: No
Foliage: Evergreen
Habit: Bushy
Genus: Hibiscus can be deciduous or evergreen shrubs, trees, annuals or perennials, with simple or palmately lobed leaves and large, funnel-shaped flowers over a long flowering season
Name status: Accepted

How to grow

Cultivation

See Hibiscus rosa-sinensis cultivation

Propagation

Propagate by semi-ripe cuttings in summer

Suggested planting locations and garden types

City and courtyard gardens
Coastal
Sub-tropical
Patio and container plants
Houseplants
Conservatory and greenhouse

Pruning

Pruning group 9, but little or no regular pruning for evergreen shrubs

Pests

May be susceptible to aphids, scale insects, mealybugs and glasshouse whitefly when grown under glass

Diseases

May be susceptible to honey fungus (rarely) and powdery mildews

Get involved

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