Philadelphus delavayi f. melanocalyx 'Nyman's Variety'

RHS Plant Profile

mock orange 'Nyman's Variety'

Synonyms

Philadelphus delavayi 'Nymans'

Shrubs

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An upright, deciduous shrub to 3m high, with long, arching stems and ovate, dark green leaves. Produces loose clusters of fragrant, single white flowers with contrasting purple calyxes in early summer

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

2.5-4 metres

Max Spread

1.5-2.5 metres

Size

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

Growing Conditions

Chalk Clay Loam Sand

Moisture: Well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun Partial shade

Aspect: East–facing or South–facing or West–facing
Exposure: Exposed or 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: Hydrangeaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Columnar upright, Pendulous weeping
Genus: Philadelphus are deciduous shrubs with simple, opposite leaves and bowl-shaped, usually fragrant flowers which may be solitary or in small panicles or racemes in summer
Name Status: Accepted

How to Grow

Cultivation

Grow in any moderately fertile, well drained soil in full sun or part shade

Propagation

Propagate by softwood cuttings in summer, or hardwood cuttings in autumn or winter

Suggested planting locations and garden types

City and courtyard gardens
Coastal
Cottage and informal garden
Banks and slopes
Flower borders and beds
Wall side borders

Pruning

Pruning group 2, after flowering

Pests

May be susceptible to aphids

Diseases

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