tree

Silver Princess

Eucalyptus caesia

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:

Ornamental UsesStriking weeping habit, powdery white stems, peeling minni ritchi bark, and large red winter flowers.
Practical UsesHighly drought-tolerant once established, making it ideal for low-water xeriscapes.
Ecological BenefitsProvides a valuable winter and spring nectar source for hummingbirds and insect pollinators.

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

  1. Select a planting site in full sun with exceptional drainage, such as a sandy loam or gravelly slope.
  2. Dig a hole twice as wide as the root ball but no deeper, keeping the soil collar level with the surrounding ground.
  3. Water deeply immediately after planting to settle the soil, then transition to infrequent, deep watering during the first dry season.
  4. 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

TaskJanFebMarAprMayJunJulAugSepOctNovDec
Fertilize
Pest Check
Prune
Winter Prep

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Specimen TreeMediterranean GardenFocal PointWindbreak

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.

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.