Weeping Pittosporum (Pittosporum angustifolium), also called Native Apricot, Gumbi Gumbi, Gumby Gumby, Bitter Bush, or Desert Willow, is an inland Australian shrub or small tree with narrow leaves, pendulous branchlets, cream-yellow flowers, orange fruit with sticky red seeds, drought tolerance, and rugged dry-country character. It is promising for literati, weeping, informal upright, dry inland, and sparse old-tree bonsai.
This guide uses Southern Hemisphere timing first and gives Australia-specific climate adjustments. It resolves the broad "Native Pittosporum" cluster to P. angustifolium because it has small-to-moderate narrow leaves, strong inland identity, authoritative horticultural data, and specific AusBonsai examples.
The governing care principle is to grow it lean, bright, and warm while using its natural weeping habit rather than forcing dense pads. It is slow and specialist, so avoid severe combined work.
Quick Care Summary
| Care area | Practical guidance |
|---|---|
| Light | Full sun to strong light. |
| Water | Water deeply, then allow partial drying; avoid stagnant roots. |
| Soil | Open, mineral, fast-draining mix; tolerates alkaline and dry conditions when established. |
| Feeding | Light to moderate feeding in active growth. |
| Repotting | Repot in warm active growth; stage root reduction. |
| Pruning | Cut to live shoots; old-wood response should be tested. |
| Wiring | Wire young branches early; older wood stiffens. |
| Fruit | Fruit and sticky seeds are display features only on strong trees. |
| Safety | Do not use bonsai material medicinally; keep fruit/seeds/prunings away from children, pets, and livestock. |
| Main risks | Slow growth, cold wet roots, overwatering, weak old-wood response, brittle branches, wire scars, fruit mess, toxicity/medicinal misuse, and provenance confusion. |
Identification And Scope
Pittosporum angustifolium is native across inland mainland Australia and is widely known under older names such as Pittosporum phillyreoides. It is a weeping shrub or small tree with narrow leaves, cream to yellow flowers, and orange fruit that opens to reveal sticky red seeds.
Do not confuse it with large-leaved rainforest Pittosporum, New Zealand kohuhu, or unrelated "native apricot" plants. Record provenance and nursery label.
Development, Transition, And Refinement
- Development: use a training pot, full sun, light feeding, and selected sacrifice growth to thicken trunk and primary branches.
- Transition: reduce long weeping shoots in stages, preserve lower branches, and begin root correction gradually.
- Refinement: maintain sparse pendulous branch masses, thin fruit, and avoid dense hedging.
Seasonal Care
- Spring: increase water as growth resumes, repot only when active, wire young shoots.
- Summer: main pruning and wiring period; water deeply in heat.
- Autumn: reduce coarse growth and slow feeding.
- Winter: keep bright and drier; avoid cold wet root work.
Watering, Soil, And Repotting
Use an open mineral mix. Water deeply, then allow partial drying. Do not keep it constantly wet because dryland roots need oxygen.
Repot during warm active growth, preserve fine roots, shorten large roots over several repots, and secure the tree firmly. Do not combine severe root work with hard pruning or heavy fruiting.
Pruning, Wiring, And Styling
Let shoots extend, then cut back to live side shoots or visible buds. Test before relying on old-wood budding.
Wire young flexible branches. Suitable styles include literati, weeping informal upright, slanting dry-country tree, sparse clump, and fruiting display. Keep negative space; do not create formal pads.
Pests, Diseases, And Problems
| Problem | Signs | Likely cause | First response |
|---|---|---|---|
| Root rot | Yellowing, collapse | Heavy wet mix | Improve drainage and reduce watering |
| Hard drying | Crisp tips | Pot dried too far in heat | Rehydrate and shade pot |
| Slow growth | Little response | Cool roots or poor season | Work only in warm active growth |
| Failed cut | Dieback beyond cut | Weak old wood | Stage pruning and preserve live shoots |
| Wire scars | Bark marks | Wire left too long | Check often |
| Scale/mites | Sticky or dull foliage | Pests | Treat appropriately |
| Fruit mess | Sticky seeds | Heavy crop | Thin fruit on refined trees |
| Safety misuse | Ingestion or medicinal use | Confusion around common names | Do not consume bonsai material |
Regional Notes
Best fits include Adelaide, inland SA, western NSW, Victoria dry districts, Perth dry gardens, hot inland Australia, and frost-light dry temperate benches. Sydney and Brisbane are possible in sharp drainage. Tasmania, Canberra, and cold wet tablelands require protection. Darwin and wet tropics are poor fits.
Key Takeaways
- Weeping Pittosporum is a dry-country specialist.
- Use its weeping habit and sparse form.
- Keep roots lean, warm, and aerated.
- Treat fruit, seeds, and medicinal claims conservatively.
Source Notes
- Botanic Gardens SA Plant Selector, Macquarie/Friends botanic notes, Territory Native Plants, iNaturalist/ALA, POWO/APC naming references, and horticultural sources are useful for distribution, drought/frost tolerance, habit, flowers, and fruit.
- AusBonsai provides specific bonsai context for P. angustifolium styling and nursery material.
Source caution: Technique depends on provenance, old name versus current name, root health, water, heat, frost, branch age, and fruit load.