shrub

Cut-leaf Banksia

The Story

Plant Bio

Banksia praemorsa, the cut-leaf banksia, is an upright, multi-stemmed evergreen shrub native to the coastal sand dunes of southwestern Australia. It features narrow, wedge-shaped leaves with distinct, forward-pointing teeth and cylindrical flower spikes that transition from yellow-green to deep maroon-red.

This species is distinguished by its non-lignotuberous growth habit, meaning it lacks an underground woody swelling and relies entirely on seed for regeneration. The dual-color flower phases provide prolonged visual interest from winter through spring.

Uses & Benefits:

Bold, architectural form with striking dual-colored flower spikes and uniquely toothed foliage.

Highly wind-resistant and tolerant of salt spray, making it an excellent choice for stabilizing coastal soils.

Provides a rich nectar source for bees and, in North American gardens, native hummingbirds.

Essentials

At a Glance

Plant Type

Shrub

Height

157"

Width

118"

Light

Full Sun

Zones

9, 10

Water

Low

Humidity

Low to Moderate

Lifespan

Long-lived

Native To

Australia

Toxicity

Non-toxic

Bloom period

Winter – Spring

In flower about 6 months of the year

Planting

How to Grow

Select a planting site with full sun and exceptional drainage, ideally in sandy or gravelly soil.
Dig a hole twice as wide as the root ball but no deeper, ensuring the plant sits slightly above the surrounding soil level to prevent collar rot.
Water deeply during the first summer to establish the root system, then reduce irrigation to zero once established.
Avoid all phosphorus-heavy fertilizers, applying only low-phosphorus formulations designed for native Australian plants.

Pro Tip

Never prune hard into old, leafless wood; because this species is non-lignotuberous and lacks epicormic buds, cutting past the green canopy will kill the plant.

Keep It Thriving

Care Guide

Do

Plant in sandy, fast-draining soil to prevent root rot.
Prune lightly and regularly immediately after flowering to maintain a dense shape.
Use only low-phosphorus fertilizers formulated for Proteaceae.

Don't

Do not prune back into bare, leafless wood.
Do not plant in heavy clay or water-retentive soils.
Do not overwater during warm summer months.

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Coastal gardensSpecimen plantingWindbreaksMediterranean-style gardens

Companion Plants

Adenanthos sericeus Grevillea lanigera Leucadendron salignum

Multiply

Propagation Methods

Good to Know

Common Questions

Cut-leaf Banksia questions

What zones can Cut-leaf Banksia grow in?

Cut-leaf Banksia is hardy in USDA Zones 9–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Cut-leaf Banksia deer resistant?

Not reliably. Deer may browse Cut-leaf Banksia, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Cut-leaf Banksia bloom?

Cut-leaf Banksia typically blooms in winter through spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Cut-leaf Banksia need full sun?

Cut-leaf Banksia does best in full sun (6+ hours).

Is Cut-leaf Banksia drought tolerant?

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