Callistemon Viminnalis 'Slim'

40cm / 45L: Approx. 1.2 – 1.6 m tall
100L: Approx. 1.8 – 2.2 m tall

Please note: These height guides are approximate, as we work with live plants and natural variation is expected. The measurements provided reflect typical stock sizing but may vary between batches.

Size
$250.00
$250.00
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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.

Plant Profile
Planting & Spacing Tips
Post Planting Care
Tips for Various Soil Types

1. Botanical & Physical Characteristics

BOTANICAL NAME:
GENUS:
BOTANICAL SPECIES:
Callistemon viminalis
COMMON NAME:
FAMILY:
Myrtaceae
EVERGREEN / DECIDUOUS:
FOLIAGE TYPE
FORM & SHAPE

2. Growth & Environmental Conditions

GROWTH RATE
  • Medium Growth Rate
  • Fast Growth Rate
EXPECTED GROWTH PER YEAR

20 – 40 cm per year

MATURE HEIGHT

2.5 – 3 meters

MATURE WIDTH

1 – 1.5 meters

SUNLIGHT EXPOSURE
  • Full Sun
FROST TOLERANCE

AUSTRALIAN NATIVE?

3. Practical Uses & Flowering

USES:
FLOWER COLOUR
FLOWER TYPE
FLOWERING PERIOD
  • Spring
  • Autumn

Planting Tips

Plant Spacing

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

Ensuring A Strong Start

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: 49.5cm (W) × 35.2cm (D)
  • 70L Pot: 55cm (W) × 41.8cm (D)
  • 100L Bag: 50.6cm (W) × 52.8cm (D)
  • 100L Pot: 66cm (W) × 49.5cm (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)

Post Planting Care

When planting a new tree or shrub, proper watering is essential to ensure healthy establishment and long-term growth. Follow these guidelines to give your plant the best start:

  1. Immediately After Planting:
    Water generously right after planting to settle the soil around the roots and eliminate air pockets. This helps the roots make good contact with the soil.
  2. First Three Months (Establishment Phase):
    The initial three months are critical for root development. Water deeply twice daily (morning and evening) to encourage strong, deep root growth.
  3. Irrigation Systems:
    If using an irrigation system, adjust it to provide adequate water during the establishment phase. Ensure the water reaches the root zone without overwatering.
  4. Weather Considerations:
    Adjust watering based on weather conditions. Increase frequency during hot, dry periods and reduce it during cooler, wetter seasons.
  5. Ongoing Care:
    After the establishment phase (3 months), gradually reduce watering frequency but ensure the plant receives consistent moisture, especially during dry spells.

Long Term & Ongoing Care

Growing Your Callistemon Viminnalis 'Slim' in Various Soil Types

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