shrub

River Bottlebrush

The Story

Plant Bio

Callistemon paludosus is an evergreen Australian shrub adapted to riparian zones and moist soils. The plant features a weeping growth habit with narrow, flexible branches and hard, fissured bark on older specimens.

This species is distinguished by its soft, linear-lanceolate leaves that emerge with pinkish or silvery tones due to a coating of fine silky hairs. The pale cream to light yellow flower spikes resemble traditional bottle brushes and appear from spring into summer.

Uses & Benefits:

Produces distinctive cream to pale yellow bottlebrush flower spikes against weeping, narrow foliage.

Excellent for stabilizing soils in wet, erosion-prone areas and rain gardens.

Provides abundant nectar for insect pollinators and hummingbirds in North America.

Essentials

At a Glance

Plant Type

Shrub

Height

118"

Width

118"

Light

Full Sun, Partial Sun

Zones

8, 9, 10

Water

Moderate to high

Humidity

Medium

Lifespan

20-50 years

Native To

Australia

Toxicity

Non-toxic

Bloom period

Spring – Summer

In flower about 6 months of the year

Planting

How to Grow

Select a planting site in full sun to partial shade with moist, clay, or loamy soil.
Dig a hole twice the width of the root ball and to the same depth.
Gently remove the plant from its container, loosen outer roots if slightly bound, and place in the hole.
Backfill with native soil, firm gently, and water thoroughly to settle the roots.

Pro Tip

Prune lightly immediately after summer flowering finishes; cutting back into old, leafless wood prevents new shoots from developing because this species lacks dormant buds on bare branches.

Keep It Thriving

Care Guide

Do

Water regularly during the first growing season to establish a deep root system.
Prune lightly after flowering to maintain a compact, bushy shape.
Plant in wet or poorly drained areas where other shrubs struggle to survive.

Don't

Do not prune hard into old, woody stems that lack green leaves.
Do not apply heavy doses of high-phosphorus fertilizers.
Do not allow young plants to dry out completely during prolonged dry spells.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Fertilize
Pest Check
Plant
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Rain GardenHedgeErosion ControlBog Garden

Companion Plants

Clethra alnifolia Ilex glabra Cornus sericea

Multiply

Propagation Methods

Good to Know

Common Questions

River Bottlebrush questions

What zones can River Bottlebrush grow in?

River Bottlebrush is hardy in USDA Zones 8–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is River Bottlebrush deer resistant?

Not reliably. Deer may browse River Bottlebrush, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does River Bottlebrush bloom?

River Bottlebrush typically blooms in spring through summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does River Bottlebrush need full sun?

River Bottlebrush does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is River Bottlebrush drought tolerant?

Yes — once established (usually after the first full season), River Bottlebrush handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.