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Shrubs

Ceratostigma griffithii

Griffith's plumbago

A semi-evergreen, woody sub-shrub with attractive, bristly foliage outlined in purple-brown, clusters of blue flowers in late summer and autumn, and good autumn colour

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Ultimate height

0.5–1 metres

Time to ultimate height

2–5 years

Ultimate spread

0.5–1 metres

Chalk

Clay

Loam

Sand

Moisture

Moist but well–drained, Well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun

Aspect

South–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: Plumbaginaceae
Native to the UK: No
Foliage: Semi evergreen
Habit: Bushy
Genus: Ceratostigma can be evergreen or deciduous shrubs or herbaceous perennials, with simple leaves which usually colour well in autumn, and short terminal or axillary spikes of salver-shaped blue flowers in late summer and autumn
Name status: Correct
Plant range: Himalaya, W. China

How to grow

Cultivation

Grow in well-drained soil in a sheltered, sunny postition

Propagation

Propagate by semi-hardwood cuttings or layering

Suggested planting locations and garden types

Cottage and informal garden
Gravel garden
Mediterranean climate plants
City and courtyard gardens
Low Maintenance
Banks and slopes
Flower borders and beds
Wall side borders

Pruning

Pruning group 10 in early to mid-spring

Pests

Generally pest-free

Diseases

May be susceptible to honey fungus (rarely) and powdery mildews

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