shrub

Coast Daisy-bush

The Story

Plant Bio

Olearia axillaris, commonly known as coast daisy-bush, is an erect, densely branched evergreen shrub native to coastal Australia, reaching heights of up to ten feet. Its narrow, linear leaves are distinctly discolorous, showing a green upper surface and a densely felted, woolly white underside that releases a rosemary-like aroma when crushed.

The species is distinguished by its extreme tolerance to salt spray and maritime winds, making it a primary colonizer of coastal sand dunes. Small, cream-white flower heads with yellow centers sit directly in the leaf axils, appearing continuously from late spring through winter.

Uses & Benefits:

Provides year-round structural form with its dense, silver-gray foliage and compact, bushy habit.

Highly drought-tolerant and fire-retardant once established, requiring minimal maintenance or supplemental water.

Acts as an exceptional windbreak and sand binder in harsh, salt-sprayed coastal environments.

Essentials

At a Glance

Plant Type

Shrub

Height

118"

Width

98"

Light

Full Sun

Zones

9, 10

Water

Low

Humidity

High

Lifespan

Perennial

Native To

Australia

Toxicity

Minor toxicity to pets if ingested in large quantities

Bloom period

Late spring – Winter

In flower about 10 months of the year

Planting

How to Grow

Select a planting site in full sun with sandy, light, or gravelly soil that drains rapidly.
Dig a hole twice as wide as the root ball but no deeper, ensuring the crown sits slightly above the surrounding soil level.
Water deeply immediately after planting to settle the soil, then withhold water until the top few inches of soil dry out completely.
Avoid adding organic compost, heavy mulches, or high-phosphorus fertilizers to the planting hole.

Pro Tip

Provide exceptionally sharp, sandy drainage and full, unshaded sun; planting in heavy clay or rich, organic garden beds causes rapid root rot.

Keep It Thriving

Care Guide

Do

Grow in full, unshaded sun to maintain a compact, bushy habit.
Ensure the soil is exceptionally well-drained, especially during wet winter months.
Prune lightly a few times a year to encourage dense, branching growth.

Don't

Do not plant in heavy clay, waterlogged soils, or low-lying areas that collect water.
Do not cut back severely into old, thick, leafless wood, as it will fail to shoot back.
Do not overwater or apply heavy organic fertilizers.

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Coastal dune stabilization and erosion controlWindbreaks and salt-tolerant screensLow-water xeriscaping and rock gardensHedges and sheared borders

Companion Plants

Westringia fruticosa Correa alba

Multiply

Propagation Methods

Good to Know

Common Questions

Coast Daisy-bush questions

What zones can Coast Daisy-bush grow in?

Coast Daisy-bush 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.

When does Coast Daisy-bush bloom?

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

Does Coast Daisy-bush need full sun?

Coast Daisy-bush does best in full sun (6+ hours).

Is Coast Daisy-bush drought tolerant?

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