The Story
Plant Bio
Buckinghamia celsissima, the ivory curl tree, is an evergreen tree native to the wet tropical rainforests of northeastern Queensland. In cultivation, it maintains a compact upright form of six to twelve metres, producing glossy dark green leaves with pale undersides and deeply lobed juvenile foliage on new growth.
The tree produces dense, drooping terminal racemes up to 27 centimetres long packed with fragrant white to cream flowers from summer through to winter. New growth flushes with a bronze or red colour, providing seasonal contrast against the mature canopy.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Tree
Height
472 inches
Width
236 inches
Light
Full Sun, Partial Sun
Zones
9, 10
Water
Moderate
Humidity
High
Lifespan
Long-lived
Native To
Northeastern Queensland, Australia
Toxicity
Non-toxic
Bloom period
Summer – Winter
In flower about 7 months of the year
Planting
How to Grow
- Select a site in full sun to partial shade with well-drained soil.
- Dig a hole twice the width of the root ball and plant at the same depth as the container.
- Water thoroughly to settle the soil and apply a layer of organic mulch, keeping it clear of the trunk.
- Provide regular moisture during the first year until the root system is established.
Pro Tip
Prune lightly immediately after flowering to shape the canopy; cutting back into old, leafless wood will prevent reshooting as Proteaceae species lack dormant buds on mature wood.
Keep It Thriving
Care Guide
Do
- Mulch around the base to retain soil moisture and suppress weeds.
- Prune lightly after flowering to maintain a compact shape.
- Use low-phosphorus fertilisers formulated specifically for native plants.
Don't
- Do not prune heavily into old, bare wood where new shoots cannot form.
- Do not allow heavy, high-phosphorus fertilisers near the root zone.
- Do not plant in poorly drained clay soils where water pools.
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fertilize | ||||||||||||
| Mulch | ||||||||||||
| 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
Ivory Curl Flower questions
What zones can Ivory Curl Flower grow in?
Ivory Curl Flower is hardy in USDA Zones 9–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
When does Ivory Curl Flower bloom?
Ivory Curl Flower typically blooms in summer through winter. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Ivory Curl Flower need full sun?
Ivory Curl Flower does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Ivory Curl Flower drought tolerant?
Yes — once established (usually after the first full season), Ivory Curl Flower 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 Ivory Curl Flower 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.