Phlox divaricata 'Dirigo Ice'
sweet william 'Dirigo Ice'
An erect and ethereal looking herbaceous perennial, best suited for a woodland type of setting. Has fine, small, green lance-shaped foliage and loose clusters of slightly fragrant star-shaped, very pale lilac flowers in spring.
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Size
Ultimate height
0.1–0.5 metresTime to ultimate height
2–5 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Moist but well–drained, Well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Blue | Green | ||
|---|---|---|---|---|
| Summer | Green | |||
| Autumn | Green | |||
| Winter |
Position
- Full shade
- Partial shade
Aspect
East–facing or North–facing or South–facing or West–facing
Exposure
Exposed or Sheltered Hardiness
H6Botanical details
- Family
- Polemoniaceae
- Native to GB / Ireland
- No
- Foliage
- Deciduous
- Habit
- Columnar upright
- 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
Will grow well in fertile moist but well-drained soil in a woodland type of setting in shade or partial shade. Apply a thin layer of compost top dressing to add nutrients to the soil. Pinch back growing tips to promote bushiness.
Propagation
Propagate by division in autumn or spring, by basal cuttings in spring, or by a root cutting in early autumn or winter
Suggested planting locations and garden types
- Cottage and informal garden
- Patio and container plants
- Flower borders and beds
- Underplanting of roses and shrubs
Pruning
No pruning required
Pests
Generally pest-free, though may be susceptible to grazing by rabbits
Diseases
May be susceptible to powdery mildews, grey moulds and leafy gall
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