Callistemon Viminalis 'Slim' - Evergreen Trees Direct

Callistemon Viminalis 'Slim'

Name: Callistemon Viminalis 'Slim'
Brand: Evergreen Trees Direct
Price: 265.00 AUD
Availability: InStock

$265.00

Tax included. Shipping calculated at checkout.

82 in stock

Size: 40cm/45L

40cm/45L

Current Stock Height Guides

40cm/45L: Enquire within for height guide information.

Trade Customers

We supply advanced trees to landscapers, developers, architects, and councils Australia-wide. Trade clients receive fast quotes, expert advice, and access to premium stock with reliable freight.

About Callistemon Viminalis 'Slim'

Callistemon viminalis ‘Slim’ is a compact, narrow-growing bottlebrush ideal for tight spaces, hedging, or feature planting in modern gardens. This Australian native cultivar maintains a naturally upright form, typically reaching around 3 metres tall with a spread of just 1–1.5 metres, making it perfect for small gardens, along driveways, or beside fences.

‘Slim’ produces vibrant red bottlebrush flowers in spring and autumn, attracting birds, bees, and pollinators. The foliage is dense and evergreen, providing year-round screening and structure. Hardy and low maintenance, it thrives in full sun, tolerates most soil types, and handles both drought and light frost once established. Responds well to pruning after flowering to maintain shape and density.

Key Information to Know

Evergreen / Deciduous

Callistemon Viminalis 'Slim' is an Evergreen (foliage year round) Tree

Mature Height & Width

Mature Height: 2.5 – 3 meters

Mature Width: 1 – 1.5 meters

Callistemon Viminalis 'Slim' is expected to grow 20 – 40 cm per year.

Frost Tolerance

Is Callistemon Viminalis 'Slim' frost tolerant?

Callistemon Viminalis 'Slim' is Frost Tolerant – Can handle light to moderate frost once established.

Flowering Information

Callistemon viminalis ‘Slim’ produces bright red bottlebrush flowers from spring through summer, with a lighter repeat flush in autumn. The vivid blooms sit neatly along its narrow, upright branches, giving a bold seasonal display without adding bulk to its slender habit.

Native Information

Is Callistemon Viminalis 'Slim' an Australian Native? Yes

Callistemon Viminalis 'Slim' is Native to Derived from Callistemon viminalis, which is native to eastern Australia, particularly along watercourses and moist soils in Queensland and New South Wales.

Wildlife Value

Its nectar-rich flowers attract honeyeaters, native bees, butterflies and other beneficial insects, while the dense, upright foliage provides shelter for small birds. Its long flowering period offers ongoing support for pollinators across much of the year.

Sunlight Information

Callistemon Viminalis 'Slim' will thrive best in:

Full Sun

Preffered Soil

Callistemon viminalis ‘Slim’ performs best in well-drained sandy or loam soils and prefers slightly acidic to neutral conditions. It tolerates nutrient-poor soils but may struggle in heavy clay or waterlogged sites unless improved with organic matter and coarse material to boost drainage. Keep soil evenly moist during establishment, then transition to deep, occasional watering as it matures and develops excellent drought resilience.

Botanical Information

Common Name: Slim Bottlebrush

Genus: Callistemon

Botanical Species: Callistemon viminalis

Family: Myrtaceae

Botanical Name: Callistemon viminalis ‘Slim’

Landscape Uses

Screening or Privacy
Feature Tree
Driveway Border
Council or Civic Landscapes
Underplanting

Callistemon Viminalis 'Slim' works in an:

Australian Native Garden – celebrates local plants with natural character.
Formal Garden – structured, symmetrical design with clipped shapes.
Modern Garden – sleek, minimal, and design-led planting.
Wildlife Garden – planting to attract birds, bees, and pollinators.
Low-maintenance Garden – resilient choices for easy care and year-round appeal.

Planting, Spacing & Care

Choose a sunny location with well-drained soil.
Dig a hole twice as wide as the pot.
Backfill with enriched soil and water deeply after planting.

Feature Planting: Space 1.5 – 2 m apart
Hedging & Screening: Space 0.8 – 1.2 m apart for dense screening
Avenue Planting: Space 2 – 3 m apart for linear planting

Water well during establishment.
Prune lightly after flowering to maintain shape and encourage dense growth.
Apply mulch to retain moisture and suppress weeds.

Performs well in sandy, loamy, or even clay soils, provided drainage is good. Add compost or organic matter to improve soil structure if necessary.

Callistemon Viminalis 'Slim' is expected to grow 20 – 40 cm per year.

Medium Growth Rate
Fast Growth Rate

Root Ball Dimensions (Width × Depth) For Planting

Use this as a reference when digging your planting hole. We recommend digging at least 10% wider than the dimensions below to encourage strong root development.

30cm Pot: 33cm (W) × 30cm (D)
40cm/45L Pot: 44cm (W) × 41.5cm (D)
50cm Pot / 70L Pot: 55cm (W) × 41.8cm (D)
100L Bag: 50.6cm (W) × 52.8cm (D)
150L Bag: 66cm (W) × 55cm (D)
200L Bag: 71.5cm (W) × 60.5cm (D)
300L Bag: 88cm (W) × 63.8cm (D)
400L Bag: 99cm (W) × 66cm (D)
500L Bag: 122cm (W) × 66cm (D)
750L Bag: 134cm (W) × 69cm (D)
1000L Bag: 146.3cm (W) × 71.5cm (D)
2000L Bag: 176cm (W) × 82.5cm (D)

Ideal Conditions

Tropical QLD (Cairns, Townsville)
Subtropical QLD (Brisbane, Gold Coast, Sunshine Coast)
Inland QLD (Darling Downs, Central QLD)
Northern NSW (Byron, Coffs, Armidale)
Sydney & Central Coast
South Coast NSW (Illawarra to Bega)
Inland NSW / Tablelands (Orange, Bathurst, Canberra)
Melbourne & Surrounds (Metro, Bayside, Geelong, Bellarine, Mornington)
Western District & Central VIC (Ballarat, Bendigo, Hamilton)
Gippsland (Latrobe Valley, East Gippsland)
Adelaide Metro & Coastal
Adelaide Hills & Barossa

Thrives in

Full Sun

Frost Tolerance

Frost Tolerant – Can handle light to moderate frost once established.

Drought Tolerance

As a young tree it requires regular watering, but once established Callistemon ‘Slim’ develops excellent drought tolerance. It thrives in hot, dry and coastal environments and maintains strong flowering and a tidy, columnar form with minimal supplementary watering.