North America Non-native Plant

Orange Wattle

Botanical name: Acacia saligna

USDA symbol: ACSA

Life cycle: perennial

Habit: shrub

Native status: Non-native, reproduces and persists in the wild in the lower 48 states  

Synonyms: Acacia cyanophylla Lindl. (ACCY)   

Orange Wattle: A Golden-Flowered Beauty for Drought-Tolerant Gardens If you’re searching for a fast-growing plant that can handle tough conditions while delivering a spectacular show of golden flowers, orange wattle (Acacia saligna) might catch your attention. This Australian native has found its way into California gardens, where it’s become a ...

Orange Wattle: A Golden-Flowered Beauty for Drought-Tolerant Gardens

If you’re searching for a fast-growing plant that can handle tough conditions while delivering a spectacular show of golden flowers, orange wattle (Acacia saligna) might catch your attention. This Australian native has found its way into California gardens, where it’s become a popular choice for gardeners seeking low-maintenance, drought-tolerant landscaping options.

What is Orange Wattle?

Orange wattle is a perennial shrub that typically grows as a multi-stemmed woody plant, usually reaching heights of 13 to 16 feet, though it can grow taller under ideal conditions. Despite its common name, this plant actually produces bright golden-yellow flowers rather than orange ones – one of those delightful quirks of plant naming that keeps gardeners on their toes!

This species is non-native to North America, having been introduced from its homeland in southwestern Australia. It has established itself in California, where it reproduces naturally and persists in the wild.

Why Gardeners Love (and Sometimes Worry About) Orange Wattle

Orange wattle brings several appealing qualities to the garden:

  • Stunning winter and spring flower display with fragrant, golden-yellow blooms
  • Attractive blue-green to gray-green foliage year-round
  • Exceptional drought tolerance once established
  • Fast growth rate for quick screening or windbreak establishment
  • Thrives in poor soils where other plants struggle
  • Excellent for erosion control on slopes
  • Attracts bees and other beneficial pollinators

However, as a non-native species, it’s worth considering native alternatives that can provide similar benefits while supporting local ecosystems.

Perfect Garden Settings

Orange wattle shines in several landscape applications:

  • Mediterranean-style gardens
  • Drought-tolerant and xeriscape designs
  • Coastal landscapes
  • Windbreaks and privacy screens
  • Erosion control on hillsides
  • Specimen plantings for winter interest

Growing Conditions and Care

Orange wattle is refreshingly easy to please. It thrives in USDA hardiness zones 9-11 and prefers:

  • Full sun exposure
  • Well-draining soil (clay, sand, or loam)
  • Minimal water once established
  • Good air circulation

The plant tolerates poor soils and coastal conditions, making it an excellent choice for challenging garden spots where other plants might struggle.

Planting and Care Tips

For the best success with orange wattle:

  • Plant in fall or winter when temperatures are cooler
  • Water regularly during the first year to establish strong roots
  • Prune lightly after flowering to maintain shape
  • Avoid over-fertilizing – this plant actually prefers lean conditions
  • Mulch around the base to conserve moisture and suppress weeds

Consider Native Alternatives

While orange wattle can be a beautiful addition to appropriate gardens, consider these native California alternatives that provide similar benefits:

  • California flannel bush (Fremontodendron californicum) for golden flowers
  • Ceanothus species for fast-growing, drought-tolerant screening
  • Native willow species for graceful form and wildlife value

The Bottom Line

Orange wattle can be a valuable addition to drought-tolerant gardens in appropriate climates, offering beautiful flowers, easy care, and practical benefits like erosion control. However, as responsible gardeners, it’s worth exploring native alternatives first to support local wildlife and ecosystems. If you do choose orange wattle, enjoy its golden winter blooms and appreciate its resilience – just be mindful of its non-native status and consider how it fits into your overall garden ecosystem.

Orange Wattle

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 saligna (Labill.) Wendl. f. - orange wattle

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