Guide to Perth Native Trees: Care, Problems & When to Remove

Jarrah is one of Perth's most iconic trees, known for its valuable timber and distinctive bark.

Characteristics: - Height: Up to 40m - Lifespan: 500+ years - Bark: Fibrous, grey-brown

Common problems: - Phytophthora dieback (root rot) - Jarrah leaf miner - Drought stress

When to consider removal: Severe dieback, structural damage, or if infected with Phytophthora (to prevent spread).

Marri (formerly Red Gum) is recognizable by its large gumnuts and red sap.

Characteristics: - Height: 10-40m - Produces large gumnuts (honky nuts) - Attracts black cockatoos

Common problems: - Canker disease - Branch drop (especially in summer) - Marri canker (Quambalaria)

When to consider removal: Extensive canker infection, dangerous branch drop history, or structural instability.

Tuart trees are unique to the Perth coastal plain and are now considered threatened.

Characteristics: - Height: Up to 40m - Distinctive white-grey bark - Naturally occurring only near Perth coast

Common problems: - Tuart decline syndrome - Drought stress - Root damage from development

Important: Tuart trees may be protected. Always check with your local council before removal.

Tips for healthy native trees:

• Water wisely: Deep, infrequent watering is better than frequent shallow watering
• Mulch: Use native mulch, but keep it away from the trunk
• Pruning: Only prune dead or dangerous branches—natives don't need shaping
• Soil: Don't fertilize with phosphorus (many natives are sensitive)
• Dieback: Report suspected Phytophthora to DBCA

Many Perth councils have tree protection policies. Before removing any tree:

• Check your local council's tree preservation order
• Some species (like Tuart) have special protection
• Significant trees may require approval regardless of species
• Penalties for illegal removal can be substantial

We can help navigate council requirements and apply for permits if needed.