Species

Banksia spinulosaHairpin Banksia

2 other cultivars

shrub

Birthday Candles Banksia

Banksia spinulosa 'Birthday Candles'

The Story

Plant Bio

Banksia spinulosa, the hairpin banksia, is an evergreen Australian shrub native to open forests, woodlands, and heathlands on sandy or sandstone-derived soils. The species features narrow, linear leaves with serrated margins and produces erect, cylindrical flower spikes packed with hundreds of individual nectar-rich flowers.

'Birthday Candles' is a dense, compact, low-growing cultivar that forms a spreading, mounded habit reaching up to two feet tall. The golden-yellow flower spikes feature contrasting reddish-orange to dark red styles, resembling lit candles held above the dark green foliage.

Uses & Benefits:

Provides striking winter interest with candle-like golden-yellow and red flower spikes held above dense, mounding evergreen foliage.

Serves as an excellent low-maintenance groundcover or container specimen for coastal and drought-tolerant landscapes.

Attracts hummingbirds, bees, and other pollinators with its abundant, nectar-rich blooms during the cooler months.

SpeciesBanksia spinulosaHairpin Banksia

Essentials

At a Glance

Plant Type

Shrub

Height

24"

Width

48"

Light

Full Sun, Partial Sun

Zones

9, 10

Water

Low

Humidity

Moderate

Lifespan

Moderate

Native To

Australia

Toxicity

Non-toxic

Bloom period

Late Fall – Early Spring

In flower about 5 months of the year

Planting

How to Grow

Select a planting site in full sun with highly permeable, sandy, or sandstone-derived acidic soil.
Dig a hole twice as wide as the root ball but equal in depth, ensuring the plant sits slightly above the surrounding soil level to prevent water pooling.
Water the plant thoroughly during its initial establishment phase, allowing the soil to dry out completely between waterings.
Apply a specialized, low-phosphorus native plant fertilizer once a year in early spring to support growth without causing toxicity.

Pro Tip

Avoid all general-purpose fertilizers, manures, and bone meal; this cultivar is highly sensitive to phosphorus, which causes rapid toxicity and plant death.

Keep It Thriving

Care Guide

Do

Ensure the soil drains rapidly and completely to prevent root rot.
Grow in full sun to maximize flower production and maintain a compact habit.
Protect the plant from hard freezes below 23°F.
Use only specialized low-phosphorus fertilizers formulated for native Australian plants.

Don't

Never plant in heavy clay or waterlogged soils.
Do not use standard fertilizers, composts, or animal manures.
Avoid cutting back hard into old, leafless wood when pruning.
Do not overwater once the root system is fully established.

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

Rock GardensCoastal GardensContainersLow HedgesBorder Edging

Companion Plants

Grevillea Anigozanthos Westringia Correa

Multiply

Propagation Methods

Good to Know

Common Questions

Birthday Candles Banksia questions

What zones can Birthday Candles Banksia grow in?

Birthday Candles 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 Birthday Candles Banksia deer resistant?

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

When does Birthday Candles Banksia bloom?

Birthday Candles Banksia typically blooms in late fall through early spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Birthday Candles Banksia need full sun?

Birthday Candles Banksia does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Birthday Candles Banksia drought tolerant?

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