Callistemon viminalis - Evergreen Trees Direct

Callistemon viminalis

$160.00

Tax included. Shipping calculated at checkout.

Size: 30cm/33cm

30cm/33cm 40cm/45L

Current Stock Height Guides

40cm/45L: 1.3m – 1.6m Approx.

Height guide disclaimer: Height ranges are approximate only. As living products, plant heights naturally vary between individual plants, batches, and seasons. No guarantee is given that supplied plants will fall within the stated range. If minimum heights are required, you mustconfirm current batch heights with Evergreen Trees Direct prior to purchase. Variation in height is normal and is not grounds for return, refund, replacement, or compensation.

Mature Height & Width

Mature Height: 4m to 8m (approx.)

Mature Width: 4m to 5m

Callistemon viminalis is expected to grow 50cm to 100cm per year (approx.).

Root Ball Dimensions

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)

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Email: sales@evergreentrees.com.au

Phone: (03) 7042 3318

About Your New Callistemon viminalis

Callistemon viminalis carries masses of vivid red bottlebrush flowers on gracefully weeping branches, and flowers heavily enough through spring and summer to colour an entire boundary. It is the classic weeping bottlebrush and among the most reliable nectar trees in Australian gardens.

Callistemon viminalis grows to 4 to 8 metres tall and 4 to 5 metres wide at 50 centimetres to 1 metre per year, which is fast. It can be run as a tall informal screen, lifted to a single trunk as a weeping feature tree, or mass planted for civic and rural screening.

This Australian native is frost hardy, surviving heavy and frequent frost without damage, and tolerates poor soils, extended dry and periodic waterlogging once established. It grows in full sun and needs only a trim after flowering to stay dense.

Frequently Asked Questions

About Callistemon viminalis

How big does Callistemon viminalis grow?

It reaches 4 to 8 metres tall and 4 to 5 metres wide, developing a weeping habit with age. It can be maintained as a large shrub or trained to a single trunk as a small tree.

When does Callistemon viminalis flower?

The heaviest flushes come through spring and summer, with sporadic flowering at other times of year. Flowering is dense enough to cover much of the canopy.

How fast does the weeping bottlebrush grow?

Fast, at 50 centimetres to 1 metre per year, which makes it one of the quicker native options for establishing a screen or feature tree.

Does Callistemon viminalis attract birds?

Yes. The nectar-rich red flowers are heavily worked by honeyeaters, lorikeets and native bees, and the dense weeping branching shelters small birds.

Is Callistemon viminalis frost hardy?

Yes. It is frost hardy and survives heavy and frequent frost without damage, suiting it to inland tablelands as well as coastal gardens.

Does it tolerate wet ground?

Yes. Callistemon viminalis naturally occurs along watercourses and handles periodic waterlogging better than most screening trees.

How far apart should I plant it for a screen?

Plant 2 to 3 metres apart for a dense informal screen, or 4 to 5 metres apart as individual weeping feature trees.

Enriched Planting Mix (AO Certified)

$21.95

Enriched Planting Mix is a certified organic blend of Pure Magic Compost, composted animal manure, gypsum, composted coarse bark and a wetting agent, bagged in 30L. It is built to be dug through existing garden soil at planting time rather than used on its own, and the gypsum is what sets it apart from a plain compost.

Gypsum helps break up heavy clay so water and roots can move through it, while the compost and manure return organic matter and nutrient to tired ground. The coarse bark holds structure and keeps air around the root zone, and the wetting agent keeps moisture in the soil longer after rain or watering.

Use it when planting trees, shrubs, roses, fruit trees and exotic garden plants, particularly into clay. Dig a hole twice the width of the pot and 7 centimetres deeper, then mix roughly one third planting mix through the excavated soil. Spread 7 centimetres of that improved soil in the base before setting the plant in.

Frequently Asked Questions

About Enriched Planting Mix

What is Enriched Planting Mix made from?

It is a blend of Pure Magic Compost, composted animal manure, gypsum, composted coarse bark and a wetting agent. Each part has a job. The compost and manure supply organic matter and nutrient, the gypsum works on clay structure, the bark keeps air around the roots and the wetting agent holds moisture in the soil.

What plants is it suitable for?

It suits exotic garden plants, including roses, ornamental and deciduous trees, fruit trees, shrubs and perennials, and it earns its keep most on heavy clay sites. It is a planting mix rather than a potting mix, so its job is improving soil at planting time. Phosphorus sensitive natives are the one clear exception.

Is it safe for natives?

No, not for the phosphorus sensitive ones. The composted animal manure in this blend lifts phosphorus well above what Proteaceae such as Banksia, Grevillea, Hakea and Protea will tolerate, and the result can be leaf burn, dieback and plant death. Use the Native Potting Mix for those species, or plant them into unimproved local soil.

Is it certified organic?

Yes. It is a certified organic product with no chemical additives, which is why the manure and compost in it are fully composted rather than raw. That makes it sound around fruit trees and vegetable beds, and it means you are adding genuine organic matter to your soil rather than a synthetic conditioner.

How much do I need?

Work on roughly one third planting mix to two thirds of the soil you dug out of the hole. For a shrub out of a 200 millimetre pot that is only a few litres. An advanced tree going into a large hole will take considerably more. Judge the quantity by the volume of the hole rather than the size of the plant.

Can I use it in pots?

It is not a potting mix and should not be used on its own in a container. The blend is designed to be diluted through garden soil, and used straight in a pot it holds too much water and settles badly. For containers, reach for a premium potting mix, or the native mix if you are potting natives.

Does it need to be watered in?

Yes. Water the plant well several hours before you plant it, then water thoroughly again once the hole is backfilled and the soil firmed down. That first deep watering settles the improved soil around the root ball and drives out air pockets. Keep the water up over the first few months while the roots establish.

View full details

Type: Garden Supplies

Enriched Planting Mix (AO Certified)

$21.95

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Uses in my Garden

Screening or Privacy
Shrubs
Rural Property Planting
Revegetation or Regeneration
Council or Civic Landscapes
Plant in Pots (or) Suitable for Pots

Callistemon viminalis works in an:

Australian Native Garden – celebrates local plants with natural character.
Wildlife Garden – planting to attract birds, bees, and pollinators.
Coastal Garden – relaxed, seaside feel with hardy, textural plants.
Woodland Garden – layered, naturalistic design under dappled light.
Low-maintenance Garden – resilient choices for easy care and year-round appeal.

Is Callistemon viminalis Evergreen or Deciduous?

Callistemon viminalis is an Evergreen (foliage year round) Tree

Mature Height & Width

Mature Height: 4m to 8m (approx.)

Mature Width: 4m to 5m

Callistemon viminalis is expected to grow 50cm to 100cm per year (approx.).

Growth Rate of Callistemon viminalis

Callistemon viminalis is expected to grow 50cm to 100cm per year (approx.).

They are considered to have a:

Fast Growth Rate

Frost Tolerance & Ideal Climate to plant Callistemon viminalis

Is Callistemon viminalis frost tolerant?

Callistemon viminalis is Frost Hardy – Survives heavy and frequent frost without damage.

Does Callistemon viminalis Flower?

Callistemon viminalis produces masses of bright red, pendulous bottlebrush flowers from spring through summer, with a lighter flush in autumn. The vibrant blooms hang gracefully from the weeping branches, creating a dramatic and highly ornamental seasonal display.

Does Callistemon viminalis flower?

Yes - Flowers

Flowering Period:

Summer
Spring
Year-Round

Flower Type:

Fluffy

Flower Colour:

Red

Is Callistemon viminalis an Australian Native Tree?

Yes

Callistemon viminalis is Native to Eastern Australia, particularly Queensland and New South Wales, where it grows naturally along watercourses and in open forests.

What is the Wildlife Value of Callistemon viminalis ?

Its nectar-rich flowers attract honeyeaters, native bees, butterflies and other beneficial insects, while the dense foliage provides shelter and nesting habitat for small birds. Its long flowering season makes it a valuable support plant for pollinators throughout much of the year.

How much Sunlight does Callistemon viminalis need?

Callistemon viminalis will thrive best in:

Full Sun

Preferred Soil?

Callistemon viminalis performs best in well-drained sandy or loam soils and prefers slightly acidic to neutral conditions. It tolerates poorer soils but may struggle in heavy clay or waterlogged areas unless improved with organic matter and coarse material to increase drainage. Keep soil evenly moist during establishment, then reduce watering as the tree matures and develops its characteristic high drought resilience.

Is Callistemon viminalis Drought Tolerant?

Is Callistemon viminalis Drought tolerant?

As a young tree it requires regular watering, but once established Callistemon viminalis develops excellent drought tolerance. It thrives in hot, dry and coastal environments and maintains reliable flowering and its graceful weeping habit with minimal supplementary watering.

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How To Plant Your Callistemon viminalis

Site: Choose a well-drained position in full sun to part shade with room for the canopy to develop.

Soil preparation: Enrich the planting area with quality compost and aged manure for a strong establishment phase.

Hole: Dig twice as wide as the root ball and the same depth.

Planting: Position level with the surrounding soil, backfill gently, firm in, then water deeply to settle the roots.

Recommended Planting Spacing For Your Callistemon viminalis

Hedging and screening: 1 to 1.5 metres apart for a dense informal screen, or 80 centimetres apart for a tighter formal hedge.

Feature tree: 3 to 4 metres apart to allow the full canopy and form to develop.

Avenue planting: 3 metres apart for a uniform soft-textured avenue.

Callistemon viminalis is expected to grow 50cm to 100cm per year (approx.).

Fast Growth Rate

Long Term Care For Your Callistemon viminalis

Watering: Water deeply twice weekly through the first 12 months. Once established, this is drought tolerant and only needs a deep soak during extended dry periods.

Mulching: Apply a 5 to 7 centimetre layer of organic mulch over the root zone, keeping it 5 centimetres clear of the trunk.

Pruning: Tip prune in late winter and again in summer to build dense growth. For a formal hedge, light shaping two to three times a year keeps lines crisp.

Fertilising: Apply a slow-release native blend in early spring and again in autumn. Avoid high-phosphorus formulations as a precaution.

Pest and disease: Hardy against most pests and diseases. Occasional inspection in warm humid conditions is all that's needed.

Planting Your Callistemon viminalis in Different Soil

Callistemon viminalis performs best in well-drained sandy loam or loam with a slightly acidic to neutral pH. Adaptable to a wide range of soils when drainage is improved with organic matter.

Sandy soil: Free-draining and ideal. Mulch well to maintain consistent moisture.

Clay soil: Improve drainage with gypsum and organic compost before planting.

Loam: The preferred soil for steady root development and consistent growth.

pH: Slightly acidic to neutral preferred. Mulch with composted leaf litter to maintain levels naturally.

Frequently Asked Questions

Frequently Asked Questions

What can I do to enhance the flowering of Callistemon viminalis? A balanced fertilizer after the primary flowering season can invigorate subsequent blooms.
Is it suitable for coastal areas? Yes, Callistemon viminalis displays good salt tolerance, making it apt for coastal gardens.