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Hickory Wattle, Lightwood, Screw-pod Wattle

The Story

Plant Bio

Acacia implexa, commonly known as hickory wattle, is an erect or spreading evergreen tree native to eastern Australia, reaching up to twelve metres in height. It features narrow, sickle-shaped phyllodes and rough, corrugated bark at its base, developing a somewhat weeping, open canopy.

This species is distinguished by its pale yellow to cream globular flower heads that bloom during summer, contrasting with the winter-flowering blackwood (Acacia melanoxylon). It also features a distinctive whitish, folded funicle around the seed and a strong tendency to sucker from the roots if disturbed.

Uses & Benefits:

Features a graceful, weeping canopy with pale cream summer flowers and attractive sickle-shaped phyllodes.

Excellent for soil stabilisation and erosion control on slopes due to its robust, suckering root system.

Provides vital pollen and nectar resources for native bees, insects, and insectivorous birds.

Essentials

At a Glance

Plant Type

Tree

Height

472 inches

Width

393 inches

Light

Full Sun, Partial Sun

Zones

8, 9, 10

Water

Low

Humidity

Low to Moderate

Lifespan

20-50 years

Native To

Eastern Australia

Toxicity

Non-toxic

Bloom period

Summer – Autumn

In flower about 4 months of the year

Planting

How to Grow

Select a site in full sun or light shade with well-draining clay, loam, or sandy soil.
Dig a hole twice the width of the root ball and to the same depth, ensuring the soil is loosened.
Gently remove the plant from its container, place it in the hole, and backfill without disturbing the root ball.
Water thoroughly to settle the soil and apply a light layer of organic mulch, keeping it clear of the trunk.

Pro Tip

Avoid digging or trenching near the root zone of established specimens; root damage triggers aggressive suckering that is difficult to control.

Keep It Thriving

Care Guide

Do

Prune lightly after flowering to remove dead wood or shape young trees.
Water young trees regularly until established, especially during dry summer periods.
Use low-phosphorus native fertilisers if feeding is necessary.

Don't

Do not prune hard into old, leafless brown wood as the plant lacks dormant buds to reshoot.
Do not disturb or dig up the soil within the root zone to prevent aggressive suckering.
Do not plant in poorly drained, permanently waterlogged sites.

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Shade TreeWindbreakErosion ControlRevegetation

Companion Plants

Themeda triandra Poa labillardierei Correa reflexa

Multiply

Propagation Methods

Good to Know

Common Questions

Hickory Wattle, Lightwood, Screw-pod Wattle questions

What zones can Hickory Wattle, Lightwood, Screw-pod Wattle grow in?

Hickory Wattle, Lightwood, Screw-pod Wattle 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.

When does Hickory Wattle, Lightwood, Screw-pod Wattle bloom?

Hickory Wattle, Lightwood, Screw-pod Wattle typically blooms in summer through autumn. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Hickory Wattle, Lightwood, Screw-pod Wattle need full sun?

Hickory Wattle, Lightwood, Screw-pod Wattle does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Hickory Wattle, Lightwood, Screw-pod Wattle drought tolerant?

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