shrub

Prickly Moses

Acacia verticillata

The Story

Plant Bio

Acacia verticillata, known as prickly Moses, is an erect, bushy evergreen shrub native to southeastern Australia that reaches five to ten feet in height. The foliage consists of rigid, needle-like phyllodes arranged in tight whorls along the stems, giving the plant a dense, twiggy structure.

During winter and spring, the shrub produces pale to bright golden yellow cylindrical flower spikes in the leaf axils. The exceptionally sharp, needle-tipped phyllodes provide excellent defensive cover for nesting birds while deterring casual contact.

Uses & Benefits:

Provides a dense, fine-textured evergreen screen with a profusion of soft yellow spikes in late winter.

Serves as an effective pedestrian barrier or security hedge when planted along property boundaries.

Offers highly protective nesting habitat and cover for small birds due to its sharp, defensive foliage.

Essentials

At a Glance

Plant Type

Shrub

Height

118"

Width

118"

Light

Full Sun, Partial Sun

Zones

8, 9, 10

Water

Low to Medium

Humidity

Low to Moderate

Lifespan

10-15 years

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 to partial shade and highly permeable, well-draining soil.
Dig a hole twice the width of the root ball and of equal depth, ensuring the soil is loose.
Position the plant so the crown sits level with the surrounding soil line to prevent rot.
Water deeply to settle the soil, then apply a low-phosphorus native fertilizer sparingly in spring.

Pro Tip

Prune only the green, leafy tips immediately after flowering; cutting back into old, leafless wood prevents regeneration and will permanently disfigure or kill the branch.

Keep It Thriving

Care Guide

Do

Wear thick leather gloves when handling the plant to protect against the sharp, needle-like foliage.
Ensure the soil drains rapidly, as waterlogged conditions trigger phytophthora root rot.
Prune lightly right after the spring flowering finishes to maintain a compact, bushy habit.

Don't

Do not cut back into old, bare wood, as the plant lacks the ability to sprout from old stems.
Do not overwater once established, as this species is adapted to dry summer conditions.
Do not apply standard high-phosphorus fertilizers, which can damage native Australian shrubs.

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

HedgeSecurity BarrierCoastal GardenWildlife Garden

Companion Plants

Ceanothus Myrica cerifera Arctostaphylos densiflora

Multiply

Propagation Methods

Good to Know

Common Questions

Prickly Moses questions

What zones can Prickly Moses grow in?

Prickly Moses 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 Prickly Moses deer resistant?

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

When does Prickly Moses bloom?

Prickly Moses 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 Prickly Moses need full sun?

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

Is Prickly Moses drought tolerant?

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