Hamamelis mollis 'Boskoop'

RHS Plant Profile

witch hazel 'Boskoop'

Synonyms

Hamamelis × intermedia 'Boskoop'
Hamamelis mollis Boskoop clone

Shrubs

A large, upright shrub with broadly oval green leaves that turn yellow in autumn and fragrant, clear yellow flowers borne along bare branches in late winter

Position

Full sun, Partial shade

Soil Types

Clay, Loam, Sand

Max Height

2.5-4 metres

Max Spread

2.5-4 metres

Size

Time to Maturity: 10–20 years
Max Spread: 2.5-4 metres
Max Height: 2.5-4 metres

Growing Conditions

Clay Loam Sand

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

Position

Full sun Partial shade

Aspect: West–facing or East–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

Fragrance Flower

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Hamamelidaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Bushy
Genus: Hamamelis are deciduous shrubs with broadly ovate or rounded leaves, sometimes colouring well in autumn, and fragrant yellow to red flowers with 4 narrow petals, borne on the leafless branches in late winter and early spring, or in autumn
Name Status: Accepted

How to Grow

Cultivation

Best in an open, sunny spot, avoiding exposed or windy positions, with well-drained, humus-rich, acid or neutral soil. See Hamamelis cultivation

Propagation

Propagate by simple layering of suitable shoots in spring, by grafting in late winter or by chip budding in late summer

Suggested planting locations and garden types

Cottage and informal garden
Low Maintenance
Flower borders and beds

Pruning

Pruning group 1

Pests

Generally pest-free

Diseases

May be susceptible to coral spot, honey fungus, phytophthora root rot and powdery mildews