Callistemon 'Injune'

Injune Bottlebrush

Botanical Name: Callistemon ‘Injune’ (syn. Melaleuca ‘Injune’)
Family: Myrtaceae
Origin: Australia (garden hybrid selection)
Plant Type: Evergreen shrub to small tree

Overview

Callistemon ‘Injune’ is a compact, upright bottlebrush bred for strong colour, reliability and adaptability in South Australian conditions. It produces masses of rich crimson-red bottlebrush flowers from spring into early summer, often followed by lighter repeat flowering in autumn. Dense, fine-textured foliage and a naturally tidy habit make it an excellent choice for hedging, screening or feature planting in Adelaide gardens.

Well suited to heat, wind and coastal exposure, ‘Injune’ is a tough, waterwise native once established, yet refined enough for modern and suburban landscapes. Its nectar-rich blooms are highly attractive to birds and pollinators, adding strong ecological value alongside year-round structure.

Key Features

• Mature Size: 2–3 m H × 1.5–2 m W (can be maintained smaller with pruning)
• Growth Rate: 30-50 cm per year under good conditions
• Foliage: Fine, narrow mid-green leaves forming a dense, upright canopy; new growth may flush soft bronze or copper tones
• Flowers: Vivid crimson to deep red bottlebrush spikes, mainly spring–early summer, with occasional autumn rebloom
• Fragrance: Not strongly fragrant
• Seasonal Interest: Bold spring flowering with evergreen structure and colour year-round
• Wildlife Value: Excellent nectar source for honeyeaters, bees and butterflies; dense foliage provides shelter for small birds
• Tolerance: Drought tolerant once established; excellent heat and wind tolerance; second-line coastal tolerant; light frost hardy (protect young plants in colder inland or Hills locations)
• Planting Density: Hedging or screening: 0.8–1.2 m apart; Feature planting: 1.5–2.5 m apart
• Pet Friendly: Non-toxic to cats and dogs

Where It Works Best

• Sunlight: Full sun for best flowering and dense growth; tolerates light part shade
• Soil: Adaptable to sandy, loamy or clay-loam soils; prefers free-draining ground; mound or improve drainage on heavy clay
• Water Needs: Establishment: 2 deep soaks/week for 8–12 weeks. Established: deep soak every 10–14 days in summer (weekly in heatwaves); minimal watering in winter
• Maintenance: Low — light prune after flowering to maintain shape and encourage repeat blooms; mulch annually; apply low-phosphorus native fertiliser in early spring
• Lifespan: 15–25+ years
• Climate Zones: Ideal for Mediterranean and temperate South Australia — Adelaide Plains, Fleurieu Peninsula, Yorke Peninsula, Barossa and coastal districts
• Soil pH: Slightly acidic to neutral preferred; tolerates mild alkalinity with good drainage

Landscape & Design Ideas

• Dense native hedge or privacy screen with seasonal colour
• Feature shrub or small tree near entries or driveways
• Bird-attracting planting in wildlife and native gardens
• Mass planting for structure in waterwise landscapes
• Mass planting for structure in waterwise landscapes

Why You Will Love It

Callistemon ‘Injune’ delivers bold red flowers, dependable structure and outstanding toughness for Adelaide gardens. Easy to maintain, highly attractive to birds and resilient in heat and wind, it’s a reliable native that brings colour, life and year-round presence with minimal effort.