Caryopteris incana 'Delft Blue'

RHS Plant Profile
bluebeard 'Delft Blue'

Save a plant

Where do you want to save Caryopteris incana 'Delft Blue'?

Plants I own
Wishlist
Go to My Plants
bluebeard 'Delft Blue' RHS
Shrubs
Buy this from Plant Nurseries
1 Suppliers

A dense, mound-forming deciduous shrub to 1m, with ovate, toothed, grey-green leaves to 7cm long. In late summer and early autumn it bears small, blue flowers in clusters along the stems

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

0.5-1 metres

Max Spread

1-1.5 metres

Size

Time to Maturity
2–5 years
Max Spread
1-1.5 metres
Max Height
0.5-1 metres

Growing Conditions

Chalk Loam Sand
Moisture
Moist but well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
East–facing or South–facing or West–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)
H4

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Lamiaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Bushy
Genus
Caryopteris can be deciduous shrubs or perennials, with aromatic, simple leaves and small blue or white flowers in compact axillary clusters in late summer and autumn
Name Status
Unresolved

How to Grow

Cultivation

Grow in moderately fertile, light, well-drained soil in full sun

Propagation

Propagate by seed sown in a cold frame in autumn; root softwood cuttings in late spring or greenwood cuttings in early summer

Suggested planting locations and garden types

  • City and courtyard gardens
  • Cottage and informal garden
  • Wildlife gardens
  • Low Maintenance
  • Banks and slopes
  • Flower borders and beds

Pruning

See pruning group 6

Pests

May be susceptible to capsid bugs

Diseases

May be susceptible to honey fungus