Quick reference
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Search common names, botanical names, uses, soil notes and cautions.
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Planning rules
1. Size first
Filter by mature height before comparing ornamental features. A “small” nursery tree may become a 20-metre canopy tree.
2. Treat root risk as a siting problem
The caution score combines mature size, vigour, suckering and known infrastructure conflicts. It is not a guarantee that a “low” tree has non-invasive roots.
3. Avoid frost pockets
Cold air settles in low areas and behind solid barriers. A slightly elevated, open site can outperform a theoretically hardier species planted in a cold sink.
4. Protect establishment growth
Mulch the root zone without piling mulch against the trunk, water deeply during establishment and protect young canopies during severe forecast frosts.
5. Check local biosecurity status
Several useful introduced trees can naturalise. Confirm state, territory and council guidance before planting near bushland, waterways or farmland.
Troubleshooting & FAQ
Leaves browned after frost. Is the tree dead?
Wait until the risk of severe frost has passed, then scratch-test small stems for green tissue. Prune only clearly dead wood. Early pruning can expose more tissue to repeat frost.
Why is a hardy fruit tree listed with a blossom warning?
Dormant branches may tolerate strong winter cold while open flowers and young fruit are vulnerable to late spring frost. Site selection and flowering time matter as much as winter hardiness.
Can I plant a high-caution tree near paving or pipes?
High caution means the mature tree usually needs generous separation and professional siting. Soil type, drainage, pipe condition and available rooting volume all affect risk.
Which filter should I use for a small courtyard?
Set maximum height to 5 or 8 metres, choose low or moderate siting caution, then search “compact” or filter for Feature, Screen or Edible.
Does “Australian native” mean locally indigenous?
No. A species may be native to Australia but outside your local bioregion. For habitat restoration or bushland edges, prefer locally indigenous provenance from a reputable supplier.
Method and source notes
Dimensions are indicative landscape ranges; cultivar, pruning, rootstock, rainfall, irrigation, soil and climate can materially change mature size. Frost and drought bands are comparative planning labels derived from horticultural references rather than laboratory guarantees. Data compiled from and expanded on this guide: frost-tolerant trees in Australia.
- Plant Selector+ — Botanic Gardens and State Herbarium of South Australia for Australian landscape traits, tolerances and indicative dimensions.
- Australian National Botanic Gardens — Eucalypts for Cold Climates for cold-climate eucalypt context and limitations.
- Royal Horticultural Society — fruit frost protection for the distinction between dormant hardiness and blossom vulnerability.
- Weeds Australia profiles and local authority lists for regional naturalisation and planting cautions.
- Atlas of Living Australia for native distribution checks and taxonomic cross-checking.