Clerodendrum × speciosum

RHS Plant Profile

Java glory bean

RHS

Other common names

pagoda flower

Climber Wall Shrub Conservatory Greenhouse

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An evergreen, frost-tender shrub or climber to around 3m tall with heart-shaped, dark green, deeply-veined leaves. Clusters of scarlet red flowers with purple bracts are borne on long stems from late spring into summer and may be followed by bean-like fruits

Position

Full sun, Partial shade

Soil Types

Clay, Loam, Sand

Max Height

2.5-4 metres

Max Spread

1-1.5 metres

Size

Time to Maturity: 5–10 years
Max Spread: 1-1.5 metres
Max Height: 2.5-4 metres

Growing Conditions

Clay Loam Sand

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

Position

Full sun Partial shade

Aspect: West–facing or South–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

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Lamiaceae
Native to GB/Ireland: No
Foliage: Evergreen
Habit: Climbing
Genus: Clerodendrum can be deciduous or evergreen shrubs, trees or climbers, with simple, often unpleasantly scented, leaves and panicles of usually fragrant salver-shaped flowers with prominent stamens, followed by small berries
Name Status: Correct

How to Grow

Cultivation

Grow outdoors in warm, sheltered frost-free area. Grow under glass in peat-free, loam-based potting compost in full light with shade from hot sun and good ventilation in the summer

Propagation

Propagate by seed, semi-hardwood and root cuttings

Suggested planting locations and garden types

Patio and container plants
Low Maintenance

Pruning

Pruning group 11

Pests

May be susceptible to mealybugs, glasshouse red spider mite and glasshouse whitefly

Diseases

May be susceptible to honey fungus (rarely)