shrub

Boobialla

The Story

Plant Bio

Myoporum insulare, known as boobialla, is a dense, fast-growing evergreen shrub native to coastal Australia, featuring thick, fleshy, lance-shaped leaves of a glossy bright green. Small clusters of white flowers with purple-spotted throats emerge from the leaf axils in spring, followed by small, fleshy purple-black fruits.

This species exhibits exceptional tolerance to salt spray and saline winds, making it a premier choice for exposed coastal windbreaks and erosion control. Its highly variable growth habit ranges from a low, sprawling groundcover to an upright, multi-stemmed small tree depending on wind exposure.

Uses & Benefits:

Glossy, bright green foliage provides year-round structure, accented by delicate white flowers and purple berries.

Acts as an exceptional windbreak and salt-tolerant barrier for exposed coastal properties.

Flowers attract generalist insect pollinators, while the fleshy purple-black berries provide food for frugivorous birds.

Essentials

At a Glance

Plant Type

Shrub

Height

236"

Width

157"

Light

Full Sun, Partial Sun

Zones

9, 10

Water

Low

Humidity

High coastal tolerance

Lifespan

Perennial

Native To

Australia

Toxicity

Skin irritant (rarely)

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 exceptionally well-drained soil.
Dig a hole twice as wide as the root ball and of equal depth, ensuring the crown sits level with the surrounding soil.
Water deeply immediately after planting to settle the soil, then water sparingly once established.
Apply a light layer of organic mulch around the base to retain moisture, keeping it clear of the main stems.

Pro Tip

Source cutting-grown plants rather than seedlings if a uniform hedge is required, as seed-grown individuals vary unpredictably from prostrate groundcovers to upright trees.

Keep It Thriving

Care Guide

Do

Plant in highly permeable, sandy, or well-drained soils to prevent root rot.
Prune regularly to maintain a dense, compact habit when grown as a hedge.
Protect young plants from deer and rabbit browsing with physical barriers.

Don't

Do not plant in heavy, waterlogged clay soils where water pools seasonally.
Avoid applying high-phosphorus or heavy chemical fertilizers.
Do not leave long, bare stubs when pruning back into older wood.

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Coastal windbreaksSoil stabilization and erosion controlDense privacy hedgesSprawling groundcover for exposed banks

Companion Plants

Myrica californica Salvia apiana Ceanothus thyrsiflorus

Multiply

Propagation Methods

Good to Know

Common Questions

Boobialla questions

What zones can Boobialla grow in?

Boobialla 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 Boobialla deer resistant?

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

When does Boobialla bloom?

Boobialla 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 Boobialla need full sun?

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

Is Boobialla drought tolerant?

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