About
Caryopteris incana 'Delft Blue' is a compact, deciduous shrub that grows up to 1 meter in height. Its leaves are ovate, serrated, and exhibit a grey-green hue, reaching lengths of up to 7 centimeters. During late summer and early autumn, this plant produces clusters of small blue flowers along its stems.
About the genus
Caryopteris includes both deciduous shrubs and herbaceous perennials, characterized by their fragrant, uncomplicated leaves. These plants produce small blue or white flowers that appear in dense clusters in the axils during late summer and autumn.
Growing conditions
- Sunlight
- Full sun
- Soil type
- Chalk, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- East-facing, South-facing, West-facing
- Exposure
- Sheltered
- UK hardiness
- H4
Plant details
- Plant type
- Shrubs
- Habit
- Bushy
- Foliage
- Deciduous
- Height
- 0.5-1 metres
- Spread
- 1-1.5 metres
- Time to full height
- 2-5 years
- Suggested uses
- City and courtyard gardens, Cottage and informal garden, Wildlife gardens
Care notes
- Cultivation
- Grow in moderately fertile, light, well-drained soil in full sun
- Pruning
- See pruning group 6
- Propagation
- Propagate by seed sown in a cold frame in autumn; root softwood cuttings in late spring or greenwood cuttings in early summer
- Pest resistance
- May be susceptible to capsid bugs
- Disease resistance
- May be susceptible to honey fungus