Spike Wattle

Acacia oxycedrus, Fabaceae

Zones

9–11

Layer

Understory

Lifespan

Perennial

Growth

Moderate

Guild Roles

ProducerNitrogen FixerWindbreakBeneficial Insect Habitat

Growing Conditions

Sun

Full Sun (preferred)

Water

Low (established)Moderate (seedling)

Soil pH

6 – 8.5

Tolerances

Drought

Frost

Heat

Pest Resistance

Disease Resist.

Companion Plants

GunyangSolanum vescum

Nitrogen FixationBeneficial Insect Habitat

Tall Spear GrassAustrostipa pubinodis

Nitrogen FixationBeneficial Insect Habitat

ButterbushPittosporum angustifolium

Nitrogen FixationWind Protection

Antagonistic Plants

Stout Bamboo GrassAustrostipa ramosissima

Spike Wattle allelopathy and dense root system suppress bamboo grass establishment

Uses

Functions

Nitrogen FixationFire ResistanceErosion Control

Edible Parts

SeedsGum

Medicinal Uses

Bark Astringent

Common Questions

What zones does Spike Wattle grow in?

Spike Wattle grows in USDA hardiness zones 9 through 11.

Is Spike Wattle a nitrogen fixer?

Yes, Spike Wattle is a nitrogen fixer and can help provide nitrogen to neighboring plants in a guild or polyculture.

What are good companion plants for Spike Wattle?

Good companions for Spike Wattle include Gunyang, Tall Spear Grass, Butterbush.

Design guilds with Spike Wattle and see companion relationships visually.

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