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Shrubs

Sinowilsonia henryi

Henry Wilson tree

A large, spreading, deciduous shrub or small tree. The leaves are broadly oval, to 18cm long. Green, catkin-like flowers appear in late spring; male and female on separate plants. Female catkins can extend to 15cm in fruit

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Ultimate height

4–8 metres

Time to ultimate height

10–20 years

Ultimate spread

4–8 metres

Loam

Sand

Moisture

Moist but well–drained

pH

Acid

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun
Partial shade

Aspect

West–facing or East–facing or North–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: Hamamelidaceae
Native to GB / Ireland: No
Foliage: Deciduous
Habit: Bushy
Genus: Sinowilsonia are deciduous shrubs or small trees with broad, oval leaves and catkin-like flowers produced in spring before the leaves open
Name status: Correct
Plant range: C & W China

How to grow

Cultivation

Grow in moist but well drained, humus-rich acid soil with protection from midday sun and cold, drying winds

Propagation

Propagate by seed sown in autumn, or by softwood cuttings, with bottom heat, in early summer

Suggested planting locations and garden types

Architectural
Cottage and informal garden
Low Maintenance

Pruning

Pruning group 1

Pests

Generally pest-free

Diseases

Generally disease-free

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