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CALLISTEMON citrinus 'Red Cluster'
Commonly known as Bottlebrush
Compact growing with deep scarlet flowers
Plant Details
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Floweringlocal_floristJanlocal_floristFeblocal_floristMarlocal_floristAprlocal_floristMaylocal_floristJunlocal_floristJullocal_floristAuglocal_floristSeplocal_floristOctlocal_floristNovlocal_floristDec
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Good to know
Sometimes has further flush of flowers in August. -
Pests & Diseases
Red spider mites, mealy bugs, scale insects under glass. -
Place of origin
Australia (New South Wales, Victoria) -
Resistant to honey fungusThese plants have little or few problems with honey fungus.
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EvergreenSilvery pink new leaves to 10cm (4in) long
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Red
Deep scarlet -
SpikesTo 15cm (6in) long with gold stamens
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Frost hardy (down to -5)
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Entire
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Lanceolate
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Height
To 2.5m (8ft) -
Spread
To 2m (6½ft) -
HedgeIdeal for hedgingIn warm, sheltered climates
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Medium shrubTypically grow to around 4-6 feet in heightRounded shrub
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Half hardy - unheated greenhouse / mild winter
Hardy in coastal and relatively mild parts of the UK except in severe winters and a risk from sudden (early) frosts. May be hardy elsewhere with wall shelter or good micro-climate. Likely to be damaged or killed in cold winters. Plant can withstand temperatures down to -5°C (23°F) -
Will grow outside in milder locations
This could include plants which would survive happily in a greenhouse or conservatory if not in a mild location. If you have a sheltered spot in your garden then it may do well here. -
Scented foliageLeaves release attractive lemon scent when crushed.
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Autumn Seasonal Interest
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Spring Seasonal Interest
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Summer Seasonal Interest
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Winter Seasonal Interest
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Rounded to broadly columnar
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Mature Sizeto 2.5m (8ft)
to 2m (6½ft)
Planting Tips and Care Advice
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Garden Location/Conditions
Australian / New ZealandGreenhouse / conservatoryNot the sort of plants to be grown outside where there are likely to be frosts. These plants need to be grown in a conservatory or cool greenhouse or at least brought inside for the winterPatio / pot plants
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Pruning group
Pruning group 5
Suitable for: Evergreen shrubs that require minimal pruning.
Action: Trim or lightly cut back shoots that spoil symmetry. Deadhead regularly.
When: Annually after flowering.
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Soil Conditions
Fertile moist well-drained soilNeutral to acid soil
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Sun Requirements
Against a wallSheltered position
Full sun
Callistemon - Growing Guide