Emmenopterys henryi

RHS Plant Profile

Henry's emmenopterys

RHS

Trees

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A spreading tree with oval leaves up to 20cm long, dark green above, paler below and bronze-purple when young. Clusters of funnel-shaped white flowers, 2.5cm across, some with a large, white bract, can appear on mature trees but only in a long, hot summer

Position

Full sun

Soil Types

Chalk, Clay, Loam

Max Height

8-12 metres

Max Spread

wider than 8 metres

Size

Time to Maturity: 20–50 years
Max Spread: wider than 8 metres
Max Height: 8-12 metres

Growing Conditions

Chalk Clay Loam

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

Position

Full sun

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): H5

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Rubiaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Bushy
Genus: Emmenopterys are deciduous trees with a spreading habit and leathery leaves. Funnel- or bell-shaped flowers develop in clusters on the ends of the branches
Name Status: Correct
Plant Range: C & W China

How to Grow

Cultivation

Needs a fertile, humus-rich, moist but well-drained soil in full sun and protection from cold, drying winds. Tolerant of both slightly acid and chalk soils

Propagation

Take softwood cuttings in early or midsummer

Suggested planting locations and garden types

City and courtyard gardens
Cottage and informal garden

Pruning

Pruning group 1

Pests

Generally pest-free

Diseases

Generally disease-free