The Story
Plant Bio
Buchanania obovata, commonly known as the green plum, is a deciduous understorey tree native to the open forests and sandstone hills of tropical northern Australia. It develops a rounded, spreading canopy of thick, leathery leaves and produces small, cream-coloured flowers in spring.
This species is highly adapted to monsoonal climates, using its deciduous habit to survive prolonged dry seasons. The edible green drupes that follow flowering are a significant traditional food source for Indigenous Australians and support local frugivorous wildlife.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Tree
Height
590 inches
Light
Full Sun, Partial Sun
Zones
10
Water
Low to moderate
Humidity
High
Lifespan
Long-lived
Native To
Northern Australia
Toxicity
Skin irritant (sap)
Bloom period
Spring
In flower about 1 month of the year
Planting
How to Grow
- Select a planting site in full sun to partial shade with excellent drainage, such as a sandy or rocky slope.
- Dig a hole twice the width of the root ball and of equal depth, backfilling with native soil without adding heavy organic matter.
- Water the young tree deeply to settle the soil around the roots, and apply a light layer of mulch to conserve moisture.
- Protect young plants from wind and any risk of frost during their first few seasons of establishment.
Pro Tip
Do not treat this species as a phosphorus-sensitive native; it belongs to the Anacardiaceae family and requires moderate soil nutrients to thrive, though it must be protected absolutely from frost.
Keep It Thriving
Care Guide
Do
- Water deeply during the active summer growing season to establish a strong root system.
- Apply a balanced fertiliser containing moderate phosphorus to support healthy canopy growth.
- Ensure the soil drains rapidly to mimic its native sandstone and laterite habitats.
Don't
- Do not plant in frost-prone areas or cold southern climates where temperatures drop below freezing.
- Do not prune heavily into old, bare wood, as regrowth from old wood is slow and patchy.
- Do not allow the roots to sit in waterlogged or heavy clay soils.
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fertilize | ||||||||||||
| Harvest | ||||||||||||
| Pest Check | ||||||||||||
| Prune |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Green plum questions
What zones can Green plum grow in?
Green plum is hardy in USDA Zone 10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
When does Green plum bloom?
Green plum typically blooms in spring through spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Green plum need full sun?
Green plum does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Green plum drought tolerant?
Yes — once established (usually after the first full season), Green plum handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
Keep exploring
Explore the genus
Hardy in your zone?
Grow Green plum with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.