Bower Wattle (Acacia cognata)

Bower Wattle

Acacia cognata

Its weeping foliage sways like soft green silk, a graceful evergreen shrub. Common names: Bower Wattle, River Wattle

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; full sun promotes the most vibrant blue-green foliage color, while partial shade suits hot inland regions
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Watering Water deeply but infrequently; allow the top 5–10 cm of soil to dry completely between waterings to avoid root rot
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Temperature Tolerates light frost down to -5°C; prefers warm temperate climates, avoid prolonged extreme heat above 38°C
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Characteristics

  • Leaf: Phyllodes (flattened leaf stalks) are narrow, linear, blue-green, 5–10 cm long, with a weeping, cascading habit
  • Flower: Pale yellow, spherical fragrant flower heads in axillary clusters, producing subtle honey-like scent
  • Stem: Slender, pendulous branches with smooth, light brown, peeling bark
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Care Guide

Watering

Keep soil evenly moist during active growth period

Fertilization

Apply slow-release, low-phosphorus fertilizer once at the start of growth. Avoid high-phosphorus fertilizers, as Acacia species are adapted to low-phosphorus soils

Eggshell powder topdressing:Crush dried eggshells into fine powder; sprinkle 1–2 tbsp around the base of the plant every 6 months; water lightly to incorporate into soil
Pruning
  • Remove dead, damaged, or crossing branches in late winter to maintain a tidy weeping shape
  • Trim overgrown branches to control size and encourage bushier, denser foliage growth
  • Thin dense inner foliage to improve airflow and reduce risk of fungal infections
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: No known toxicity to cats

Humans: No known toxic effects on humans; edible seeds in some Acacia species, but not specifically documented for this cultivar

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Garden Uses & Culture

Culture: Symbolizes resilience and graceful beauty in Australian native garden design

Usage: Ornamental specimen shrub, hedge plant, or container plant for patios and small gardens