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Herbaceous Perennial

Phlox divaricata 'White Perfume'

sweet william 'White Perfume'

A semi-evergreen perennial to 30cm in height, with trailing, rooting stems, hairy ovate leaves and loose cymes of slightly fragrantwhite flowers 2-3cm in width in early summer.

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Ultimate height

0.1–0.5 metres

Time to ultimate height

2–5 years

Ultimate spread

0.1–0.5 metres

Loam

Sand

Moisture

Moist but well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Partial shade

Aspect

North–facing or West–facing or East–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: Polemoniaceae
Native to the UK: No
Foliage: Semi evergreen
Habit: Trailing
Genus: Phlox may be evergreen or herbaceous, mat-forming or erect perennials or shrubs, with simple leaves and salver-shaped flowers in terminal clusters
Name status: Accepted

How to grow

Cultivation

Grow in humus rich, moist but well-drained, fertile soil in partial shade

Propagation

Propagate by taking softwood cuttings of non-flowering stems in spring and early summer

Suggested planting locations and garden types

Cottage and informal garden
Rock garden
Flower borders and beds
Ground cover
Underplanting of roses and shrubs
Banks and slopes

Pruning

Deadhead to prolong flowering

Pests

Generally pest-free, though may be susceptible to grazing by rabbits

Diseases

Susceptible to powdery mildews and a leaf spot

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