Sweet Acacia

Acacia farnesiana, Fabaceae

Zones

8–11

Layer

Understory

Lifespan

Perennial

Growth

Moderate

Guild Roles

Nitrogen FixerShade ProviderWindbreakPollinator AttractorBeneficial Insect Habitat

Growing Conditions

Sun

Full Sun (preferred)Partial Shade (tolerated)

Water

Low (established)Moderate (seedling)

Soil pH

6.5 – 8.5

Tolerances

Drought

Frost

Heat

Pest Resistance

Disease Resist.

Companion Plants

Red AcaciaVachellia seyal

Nitrogen FixationNurse Plant

Smooth MesquiteProsopis laevigata

Nitrogen FixationNurse Plant

Silver CassiaSenna artemisioides

Nurse PlantShade Provision

Broad-leaved MulgaAcacia eriopoda

Nitrogen FixationPollinator Sharing

Alexandrian SennaSenna alexandrina

Nitrogen FixationBeneficial Insect Habitat

Desert Milkweed VineCynanchum viminale

Physical SupportNitrogen Fixation

Tree ChollaCylindropuntia imbricata

Nitrogen FixationNurse Plant

Leather PlantJatropha dioica

Nitrogen FixationPollinator Sharing

Somali Desert RoseAdenium obesum subsp. somalense

Shade ProvisionNurse PlantWind Protection

LechuguillaAgave lechuguilla

Nitrogen FixationPollinator Sharing

White Weeping BroomRetama raetam

Nitrogen FixationWind Protection

Antagonistic Plants

Flame Thorn WattleAcacia pyracantha

Congeneric Acacia species competing for similar soil and light resources

Prickly AcaciaAcacia nilotica subsp. adstringens

Two Acacia species competing for similar resources with potential allelopathic interference from similar secondary compounds

Whitethorn AcaciaVachellia constricta

Closely related acacia species with similar resource needs and potential allelopathic interference

Uses

Functions

Nitrogen FixationShade CreationErosion ControlWildlife HabitatFragrance

Edible Parts

PodsFlowers

Medicinal Uses

Anti-InflammatoryAntimicrobialWound HealingRespiratory Conditions

Common Questions

What zones does Sweet Acacia grow in?

Sweet Acacia grows in USDA hardiness zones 8 through 11.

Is Sweet Acacia a nitrogen fixer?

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

What are good companion plants for Sweet Acacia?

Good companions for Sweet Acacia include Red Acacia, Smooth Mesquite, Silver Cassia, Broad-leaved Mulga, Alexandrian Senna.

Design guilds with Sweet Acacia and see companion relationships visually.

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