How to Grow NSW Christmas Bush
Ceratopetalum gummiferum
NSW Christmas Bush is an iconic Australian native shrub or small tree, beloved for its masses of brilliant red calyces that peak in December. Plant in full sun to part shade in well-drained, slightly acidic soil. Water regularly through spring and summer; established plants are moderately drought tolerant. Use native low-phosphorus fertiliser only. Prune lightly in January or February after the display fades, cutting back about one-third for dense flowering growth the following year.
Yearly Lifecycle
Care Essentials
Apply a low-phosphorus native slow-release fertiliser twice yearly in spring and autumn. A spring application of sulphate of iron can deepen the red calyx colour the following season.
Watch For
- Leaf-curling psyllids
- Scale insects
- Root rot in poorly drained soil
Companions
Grevillea, Callistemon, Leptospermum, Native grasses
Care Requirements
Light
Full sun to part shade
Performs well in both full sun and part shade. Sheltered from strong winds which can damage foliage and reduce the display. An open but protected position is ideal.
Watering
Regular watering; moderately drought tolerant once established
Water regularly during spring and summer. Do not let the soil dry out completely. Once established, tolerates moderate dry spells but performs better with consistent moisture. Intolerant of waterlogged conditions.
Fertilizing
Native low-phosphorus fertiliser twice yearly
Apply a native low-phosphorus slow-release fertiliser in spring and autumn. High phosphorus is harmful to Australian natives. A spring application of sulphate of iron helps intensify the red calyx colour.
Pruning
Prune by one-third in January-February after display fades
Prune in late January or February after the red calyx display has faded. Remove spent flowering stems and cut back by about one-third to encourage dense bushy regrowth. Avoid cutting into old hard wood.
Spacing
2 m apart
Allow at least 2 m between plants for mature spread. In containers, dwarf cultivars such as 'Johanna's Christmas' are suitable.
