PlantFun
Plant Needs
Sunlight
Full sun to partial shade; full sun promotes the brightest silvery-blue foliage color, tolerates cool coastal winds
Watering
Water deeply but infrequently; allow the top 15–20 cm of soil to dry completely between waterings to prevent root rot
Temperature
Hardy to -10°C; prefers cool temperate climates, avoid prolonged exposure to temperatures above 28°C
Characteristics
- Leaf: Juvenile leaves round, silvery-blue; adult leaves lanceolate, blue-green
- Flower: Creamy-white spherical clusters, blooming on mature specimens
- Stem/Bark: Smooth, peeling bark in shades of grey and brown
Care Guide
Watering
Water deeply every 7–10 days during extended dry spells
Fertilization
Apply balanced slow-release fertilizer once at the start of growing season. Avoid high-nitrogen fertilizers to prevent leggy, weak growth
Eggshell powder top-dress：Crush thoroughly dried eggshells into fine powder; sprinkle 1 tbsp per plant in early spring and work lightly into the top 2–3 cm of soilPruning
- Prune in late spring to maintain compact shape; remove dead, damaged, or crossing branches
- Thin dense inner foliage to improve airflow and reduce disease risk
- For dwarf cultivars, trim back new growth by one-third in early summer to encourage bushiness
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Toxic; contains eucalyptus oil which irritates the digestive and nervous systems
Humans: Ingestion of large quantities may cause nausea, vomiting, and abdominal discomfort
Garden Uses & Culture
Culture: N/A
Usage: Ornamental garden tree; source of eucalyptus oil for aromatherapy (diluted only)
