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Syringa vulgaris 'Katherine Havemeyer' (d)
  • RHS AGM

lilac 'Katherine Havemeyer'

'Katherine Havemeyer' is an upright medium-sized deciduous shrub becoming spreading with age, with mid-green, heart-shaped leaves and compact panicles of fragrant, double, lavender-purple flowers which fade to lilac-pink

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Size
Ultimate height
2.5–4 metres
Time to ultimate height
10–20 years
Ultimate spread
2.5–4 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained, Well–drained
pH
Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Pink Purple Green
Summer Pink Purple Green
Autumn Green
Winter
Position
  • Full sun
Aspect

South–facing or West–facing or North–facing or East–facing

Exposure
Exposed or Sheltered
Hardiness
H6
Botanical details
Family
Oleaceae
Native to the UK
No
Foliage
Deciduous
Habit
Bushy
Genus

Syringa can be deciduous shrubs or trees, with simple, entire or rarely pinnate leaves and conical panicles of small, very fragrant, 4-lobed tubular flowers in late spring or early summer

Name status

Accepted

How to grow

Cultivation

Easy to grow in most well-drained, fertile, humus-rich alkaline to neutral soils. Thrives in chalky ground and appreciates mulching when planted in full sun

Propagation

Propagate by softwood cuttings or layering in early summer. Grafting can be done in winter and chip budding in summer

Suggested planting locations and garden types
  • Low Maintenance
Pruning

Pruning group 1. Tolerates hard renovation pruning

Pests

May be susceptible to lilac leaf-mining moth, willow scale and thrips

Diseases

May be susceptible to lilac blight, honey fungus, phytophthora, powdery mildews and bacterial canker (Pseudomonas Syringae)

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