Angophora Costata

Sydney Red Gum / Rusty Gum / Smooth-barked Apple

Botanical Name: Angophora costata
Family: Myrtaceae
Origin: Eastern Australia (NSW–QLD coastal ranges)
Plant Type: Evergreen tree

Overview

A striking Australian native noted for its smooth pink–peach bark that sheds in plates, revealing fresh cream to salmon tones. The broad, rounded crown carries glossy green leaves, and in summer it bears creamy-white flower clusters rich in nectar for bees and birds. Tough once established, it thrives in full sun and free-draining sandy/loamy soils, including coastal sites. Best used as a feature or shade tree where space allows.

Key Features

• Mature Size: 8-15 m H x 6-12 m W in gardens (larger in ideal conditions)
• Growth Rate: 30-60 cm per year under good conditions
• Foliage: Evergreen, glossy mid-green; rounded crown with picturesque branching
• Flowers: Creamy-white clusters in summer (nectar-rich)
• Seasonal Interest: Year-round bark colour and texture; summer bloom
• Wildlife Value: Excellent nectar source; habitat and perching for birds
• Tolerance: Drought-tolerant once established; heat and wind tolerant; coastal tolerant (incl. frontline); handles light–moderate frost when established.
• Planting Density: 6–10 m apart (allow canopy spread; not suited to small spaces)
• Pet Friendly: Non-toxic to cats & dogs (discourage chewing of foliage)

Where It Works Best

• Sunlight: Full sun
• Soil: Free-draining sandy/loam; tolerates slightly acidic to slightly alkaline (coastal limestone)
• Water Needs: Establishment: 2 deep soaks/week for 8–12 weeks. Established: deep soak every 2–3 weeks in summer (weekly in heatwaves); rarely in winter unless dry
• Maintenance: Low. Formative prune when young; avoid heavy lopping of large limbs later. Mulch annually; light native fertiliser in spring if needed
• Lifespan: 50–100+ years
• Climate Zones: Temperate & Mediterranean SA, including coastal areas
• Soil pH: Neutral (adaptable: slightly acidic–slightly alkaline)

Landscape & Design Ideas

• Feature/statement tree for lawns and large gardens
• Shade tree for open areas
• Avenue or driveway planting (with space)
• Coastal/native designs where the colourful bark can shine

Why You Will Love It

Iconic smooth pink bark, a handsome spreading crown and summer nectar—a durable, low-care Australian tree that delivers year-round character.