The Story
Plant Bio
Eucalyptus caesia is a small, weeping evergreen tree native to Western Australian granite outcrops, distinguished by its open, pendulous canopy and peeling reddish-brown bark that reveals a powdery white underlayer. The lance-shaped leaves, stems, and flower buds are coated in a thick, silvery-white waxy bloom.
The subspecies magna, widely cultivated under the name 'Silver Princess', is selected for its highly dramatic weeping habit and larger, bell-shaped flower buds. It produces large, hanging clusters of deep pink to bright red flowers with prominent, gold-tipped stamens from winter through spring.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Tree
Height
350"
Width
150"
Light
Full Sun
Zones
9, 10
Water
Low
Humidity
Low to Moderate
Lifespan
Long-lived
Native To
Western Australia
Toxicity
Mildly toxic if ingested; foliage oils may irritate skin.
Planting
How to Grow
- Select a planting site in full sun with exceptional drainage, such as a sandy loam or gravelly slope.
- Dig a hole twice as wide as the root ball but no deeper, keeping the soil collar level with the surrounding ground.
- Water deeply immediately after planting to settle the soil, then transition to infrequent, deep watering during the first dry season.
- Apply a low-phosphorus native fertilizer sparingly in early spring to support young growth without burning the roots.
Pro Tip
Do not stake the young tree to force a rigidly upright trunk, as this prevents the development of natural trunk taper and wind-firmness. Plant in highly permeable, low-phosphorus soil and avoid summer irrigation once established to prevent root rot.
Keep It Thriving
Care Guide
Do
- Ensure the soil drains rapidly and completely.
- Use only low-phosphorus fertilizers formulated for native Australian plants.
- Allow the tree to develop its natural weeping, leaning form without rigid staking.
Don't
- Do not overwater or plant in heavy, poorly draining clay soils.
- Do not prune heavily into old, leafless wood, as it will fail to reshoot.
- Do not apply standard high-phosphorus garden fertilizers.
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fertilize | ||||||||||||
| Pest Check | ||||||||||||
| Prune | ||||||||||||
| Winter Prep |
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
Silver Princess questions
What zones can Silver Princess grow in?
Silver Princess 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.
Is Silver Princess deer resistant?
Not reliably. Deer may browse Silver Princess, especially tender spring growth — plan on repellents or fencing where pressure is high.
When does Silver Princess bloom?
Silver Princess typically blooms in winter through spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Silver Princess need full sun?
Silver Princess does best in full sun (6+ hours).
Is Silver Princess drought tolerant?
Yes — once established (usually after the first full season), Silver Princess handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
More Eucalyptus to compare

Silver Dollar Eucalyptus
Eucalyptus cinerea

Silver Dollar Tree
Eucalyptus cinerea 'Silver Dollar Tree'

Omeo Gum
Eucalyptus neglecta

Narrow-leaved Peppermint Eucalyptus
Eucalyptus nicholii

Small-leaved Gum
Eucalyptus parvifolia

Tasmanian Blue Gum
Eucalyptus globulus
Keep exploring
Explore the genus
Hardy in your zone?
Grow Silver Princess 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.

