Callistemon spp 'Snow Burst'

Snow Burst Bottlebrush

Botanical Name: Callistemon spp. ‘Snow Burst’
Family: Myrtaceae
Origin: Australia (cultivar selection)
Plant Type: Evergreen shrub to small tree (upright, softly arching habit)

Overview

Callistemon ‘Snow Burst’ is a striking white-flowering bottlebrush well suited to Adelaide’s Mediterranean climate, offering a fresh, modern take on this classic Australian native. It forms a dense, upright shrub or small tree with softly arching branches and clean mid-green foliage, producing masses of pure white bottlebrush flowers in spring, often with a lighter repeat flush in summer. Highly tolerant of heat, drought, wind and coastal exposure once established, it performs reliably across South Australia in gardens, streetscapes and landscapes requiring toughness with visual impact. The foliage releases a light, pleasant eucalyptus-like aroma when crushed, and new growth may show subtle lighter green tones, adding gentle seasonal contrast. Ideal as a feature plant, informal screen or wildlife-friendly accent, ‘Snow Burst’ combines resilience with refined beauty.

Key Features

• Mature Size: 3–5 m H × 2–3 m W (can be maintained smaller with pruning)
• Growth Rate: 30–50 cm per year under good conditions
• Foliage: Evergreen, narrow mid-green leaves; new growth lighter green; foliage lightly aromatic when crushed
• Flowers: Abundant pure white bottlebrush flowers in spring, with occasional repeat flowering in summer
  
• Seasonal Interest: Evergreen structure year-round with a standout white flowering display in spring; fresh green growth adds brightness in warmer months
• Wildlife Value: Highly attractive to bees, butterflies and nectar-feeding birds, including honeyeaters
• Tolerance: Drought-tolerant once established; excellent heat and wind tolerance; coastal-tolerant (first- and second-line); light frost hardy; adaptable to a wide range of soils including sandy and limestone soils
• Planting Density: Feature planting spaced 2.5–4 m apart; informal screening at 1.5–2 m spacing
• Pet Friendly: Generally regarded as non-toxic; ingestion of foliage may cause mild stomach upset

Where It Works Best

• Sunlight: Full sun for best flowering and dense habit; tolerates light part shade with reduced bloom
• Soil: Free-draining sandy loam, loam or improved clay; tolerates alkaline and coastal soils; avoid prolonged waterlogging
• Water Needs: Establishment: 2 deep soaks/week for 8–12 weeks. Established: deep soak every 10–14 days in summer; little to no watering required in winter unless very dry
• Maintenance: Low; light prune after flowering to maintain shape and encourage dense growth; mulch annually; optional light native fertiliser in spring
• Lifespan: 20–40+ years
• Climate Zones: Ideal for Mediterranean and temperate South Australia — Adelaide Plains, coastal suburbs, Fleurieu Peninsula, Yorke Peninsula
• Soil pH: Neutral to alkaline; tolerates slightly acidic soils if drainage is good

Landscape & Design Ideas

• Feature shrub or small tree with a crisp white spring display
• Informal screening or hedging in native and coastal gardens
• Wildlife-friendly planting in pollinator and habitat gardens
• Coastal and exposed sites where wind and salt limit plant choice
• Modern landscapes paired with grasses, lomandra and grey-foliage natives

Why You Will Love It

‘Snow Burst’ delivers the toughness of a classic bottlebrush with a refined, contemporary look thanks to its brilliant white flowers and clean evergreen foliage. Thriving in Adelaide’s heat, wind and coastal conditions, it provides long-term structure, strong wildlife value and minimal maintenance — a reliable and elegant Australian native for South Australian gardens.