North America Non-native Plant

Acacia Longifolia Ssp. Sophorae

Botanical name: Acacia longifolia ssp. sophorae

USDA symbol: ACLOS3

Native status: Not native but doesn't reproduce and persist in the wild

Synonyms: Acacia longifolia (Andrews) Willd. var. sophorae (Labill.) F. Muell. ex Benth. (ACLOS2)   

Acacia longifolia ssp. sophorae: A Golden Coastal Beauty for Your Garden Meet Acacia longifolia ssp. sophorae, a stunning Australian native that’s been quietly winning hearts in coastal gardens around the world. While this plant might not have a catchy common name that rolls off the tongue, don’t let that fool ...

Acacia longifolia ssp. sophorae: A Golden Coastal Beauty for Your Garden

Meet Acacia longifolia ssp. sophorae, a stunning Australian native that’s been quietly winning hearts in coastal gardens around the world. While this plant might not have a catchy common name that rolls off the tongue, don’t let that fool you – it’s got plenty of personality and practical benefits that make it worth considering for your landscape.

What’s in a Name?

This beauty goes by its scientific name, Acacia longifolia ssp. sophorae, though you might occasionally see it listed under its botanical synonym, Acacia longifolia var. sophorae. It’s part of the vast Acacia family, which includes hundreds of species commonly known as wattles.

Where Does It Come From?

This coastal charmer hails from the southeastern shores of Australia, where it naturally thrives along the coastlines of Victoria, Tasmania, and southern New South Wales. In its native habitat, it’s perfectly adapted to sandy soils, salt spray, and the sometimes harsh conditions that come with oceanfront living.

Why You Might Fall in Love With It

There’s something undeniably cheerful about the golden-yellow flower spikes that appear in late winter to spring. These cylindrical blooms are like little bursts of sunshine, especially welcome during the cooler months when many other plants are still sleeping. The foliage is equally attractive – silvery-blue to dark green phyllodes (those flattened, leaf-like structures that acacias are famous for) create a lovely textural backdrop year-round.

But this plant isn’t just a pretty face. It’s incredibly practical for coastal gardeners dealing with challenging conditions. Its natural salt tolerance and ability to handle sandy, well-draining soils make it a go-to choice for seaside landscapes.

Garden Roles and Landscape Uses

This versatile plant can wear several hats in your garden:

  • Coastal windbreak protection
  • Erosion control on slopes or sandy areas
  • Specimen plant for Mediterranean-style gardens
  • Background plantings in naturalized areas
  • Part of a water-wise landscape design

Perfect Garden Matches

If you’re creating a Mediterranean-inspired landscape, this plant will fit right in. It’s also ideal for:

  • Coastal gardens where salt tolerance is crucial
  • Xerophytic (drought-tolerant) garden designs
  • Naturalized areas that need low-maintenance plants
  • Modern landscapes where architectural plant forms are desired

Friends of the Garden

Your local pollinators will thank you for planting this beauty. The nectar-rich flowers are magnets for bees, butterflies, and other beneficial insects, making it a valuable addition to any pollinator-friendly garden.

Growing Conditions and Care

The good news? This plant is refreshingly low-maintenance once it’s settled in. Here’s what it loves:

  • Sunlight: Full sun is best for optimal flowering and form
  • Soil: Well-draining sandy soils are perfect; avoid heavy clay
  • Water: Drought-tolerant once established; minimal watering needed
  • Climate: Thrives in USDA hardiness zones 9-11

Planting and Care Tips

Getting your new plant off to a good start is easier than you might think:

  • Plant in spring when the weather is mild and settling-in friendly
  • Choose a spot with excellent drainage – this plant really doesn’t like wet feet
  • Water regularly during the first growing season, then back off significantly
  • Prune lightly after flowering to maintain shape and encourage bushier growth
  • Mulch around the base to help retain moisture and suppress weeds

Is This Plant Right for You?

This coastal beauty might be perfect for your garden if you’re looking for a low-maintenance plant that can handle challenging conditions while providing year-round interest and pollinator benefits. It’s particularly well-suited for gardeners in warmer climates who want to create water-wise landscapes with an Australian flair.

However, if you’re in a cooler climate (below zone 9) or have heavy clay soils with poor drainage, you might want to consider other options that are better suited to your specific conditions.

Whether you’re creating a coastal retreat or simply want to add some golden sunshine to your Mediterranean-style garden, Acacia longifolia ssp. sophorae offers a unique combination of beauty, practicality, and easy care that’s hard to beat.

Acacia Longifolia Ssp. Sophorae

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Fabales

Family

Fabaceae Lindl. - Pea family

Genus

Acacia Mill. - acacia

Species

Acacia longifolia (Andrews) Willd. - Sydney golden wattle

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA