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CERATOSTIGMA willmottianum
Commonly known as Shrubby plumbago
Clear blue
Further Reading....
CERATOSTIGMA willmottianum
- Details
- Mature Size
- Tips and Advice
- Goes Well With
- Planting Combinations
- Other Suggestions
- See Also...
-
Deciduous
Lance-shaped to obovate, bristly, mid- to dark-green, purple-margined leaves to 5cm (2in) long. Red in autumn. -
Blue
Pale to mid-blue with purple-red tubes -
Height
1m (39in) -
Spread
1.5m (5ft) -
Medium shrub Typically grow to around 4-6 feet in height
Open-branched, spreading shrub with slender stems -
Hardy - average winter Hardy through most of the UK apart from inland valleys, at altitude and central/northerly locations. May suffer foliage damage and stem dieback in harsh winters in cold gardens. Plant can withstand temperatures down to -10°C (14°F) -
Full sun -
Additional Features
Pests & Diseases - powdery mildew. -
Place of origin
western China. -
Resistant to honey fungus - These plants have little or few problems with honey fungus.
-
Flower Shape
Spikes - flowers to 2.5cm (1in) across in axillary and terminal spike-like clusters -
Tubular
-
Hardiness
Frost hardy (down to -5) -
Leaf margin
Serrulate see photos above -
Leaf shape
Lanceolate see photos above -
Obovate
-
Pruning group
Pruning group 7
Suitable for: Evergreen shrubs that flower on previous year's growth in Spring, or current year's growth in late Summer/Autumn.
Action: Cut back flowered shoots to within 1 inch of previous year's growth.
When: Annually after flowering or in Spring if flowering on current year's growth.
RHS group 10 -
Seasonal Interest
Autumn -
Soil Conditions
Medium to light, fertile, well drained soil
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Ceratostigma - Growing Guide
|
1m (39in)
|
|
|
|
1.5m (5ft) |
Buy Varieties of CERATOSTIGMA willmottianum
CERATOSTIGMA willmottianum 'Forest Blue'
Shrubby plumbagto
Bright blue flowers in late summer and good autumn colour
CERATOSTIGMA willmottianum 'Sapphire Ring'
Shrubby plumbago
Yellow-gold foliage and blue flowers. Compact tidy habit
Useful extras...
Fertilisers & Feeds - Vitax
Q4 Pelleted Fertiliser
A useful fertiliser suitable for use on a wide variety of plants. Q4 provides all the nutrients and trace elements essential for vigorous growth, abundant flowering and ripening of fruit.
3 options from £6.00
Fertilisers & Feeds - Empathy
Rootgrow mycorrhizal fungi
Recommended by the RHS. Contains Rootgrow™ mycorrhizal fungi. Suitable for all trees and shrubs (except rhododendrons, azaleas, heathers, cranberries and blueberries)
2 options from £6.00
Fertilisers & Feeds - Empathy
All-purpose Seaweed Stimulant
All-purpose organic concentrated seaweed feed that is a ready to use, derived from sustainable harvested kelp, that can be used on all outdoor and indoor plants, except acid loving plants.
Perfect used in conjunction with Rootgrow™.
Only £7.50
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