Overview
Carmichaelia astonii 'Chalk Ridge' is a bushy shrubs in the genus Carmichaelia, part of the Fabaceae family, with deciduous foliage. Carmichaelia astonii 'Chalk Ridge' grows best in full sun and partial shade, and tolerates most soils and any pH. Its UK hardiness is rated H3. Suggested uses include city and courtyard gardens, cottage and informal garden, coastal, wall side borders and flower borders and beds.
About
Carmichaelia astonii 'Chalk Ridge' is a bushy cultivar of the deciduous shrub genus Carmichaelia, known for its broom-like appearance with flattened green stems and typically leafless maturity. This cultivar thrives in full sun or partial shade, favouring sheltered, south- or west-facing aspects. It grows well in a variety of soil types including chalk, clay, loam, and sand, provided the soil is moist but well-drained and fertile. Hardy to UK zone H3, it is suitable for city and courtyard gardens, coastal areas, and informal borders, offering interest in spring and summer with its small, often fragrant pea-shaped flowers.
Growing conditions
Best soil and position for Carmichaelia
- Sunlight
- Full sun, Partial shade
- Soil type
- Chalk, Clay, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- South-facing, West-facing
- Exposure
- Sheltered
- UK hardiness
- H3
Plant details
Carmichaelia astonii 'Chalk Ridge' size, habit and characteristics
- Plant type
- Shrubs
- Habit
- Bushy
- Foliage
- Deciduous
- Suggested uses
- City and courtyard gardens, Cottage and informal garden, Coastal, Wall side borders, Flower borders and beds
Care notes
Pruning and caring for Carmichaelia astonii 'Chalk Ridge'
- Propagation
- Seed sown in a coldframe in autumn, Semi-ripe cuttings in summer
- Pest resistance
- Generally pest-free
- Disease resistance
- Generally disease-free
Frequently asked questions
Where is the best place to plant Carmichaelia astonii 'Chalk Ridge'?
Carmichaelia astonii 'Chalk Ridge' prefers full sun and partial shade. It suits sheltered positions.
What soil does Carmichaelia astonii 'Chalk Ridge' need?
Carmichaelia astonii 'Chalk Ridge' is adaptable and grows happily in most soil types, including chalk, clay, loam and sand. It is happy in soil of any pH. Aim for soil that stays moist but well-drained.
Is Carmichaelia astonii 'Chalk Ridge' hardy in the UK?
Carmichaelia astonii 'Chalk Ridge' has an RHS hardiness rating of H3, meaning it is half-hardy, tolerating -5 to 1°C, and may need winter protection in colder areas.
How do I propagate Carmichaelia astonii 'Chalk Ridge'?
Seed sown in a coldframe in autumn, Semi-ripe cuttings in summer.
More in the Carmichaelia genus
- Carmichaelia astonii
- Carmichaelia australisNew Zealand broom
- Carmichaelia corrugata
- Carmichaelia curta
- Carmichaelia muritai
- Carmichaelia petriei
