Casuarina ‘Greenwave’
Casuarina ‘Greenwave’ is a hardy evergreen native tree valued for its fine, flowing foliage and soft, natural appearance. It is widely used for screening, windbreaks, and feature planting where a relaxed, coastal or naturalistic look is desired.
Its graceful form and dense growth make it an excellent choice for creating movement and texture in the landscape.
Key Specifications
Botanical name: Casuarina glauca ‘Greenwave’
Common name: Greenwave She-oak
Plant type: Evergreen tree
Mature height: 4 to 8 metres
Mature width: 3 to 5 metres
Typical hedge height: 2 to 5 metres
Typical hedge width: 2 to 4 metres
Growth rate: Moderate to fast
Time to maturity: Approximately 3 to 5 years
Growth Habit and Structure
Casuarina ‘Greenwave’ forms a dense, spreading tree with a soft, weeping habit.
Upright base with gently cascading branchlets
Creates a rounded to slightly irregular canopy
Provides a natural, flowing silhouette
Its structure makes it suitable for both screening and feature planting.
Foliage and Appearance
The foliage is fine and feathery, giving the plant its distinctive look.
Leaves are:
Very fine, needle-like branchlets
Soft green in colour
Densely arranged along stems
The foliage creates a light, airy texture with a gentle movement in the wind.
Growth and Establishment
Casuarina ‘Greenwave’ establishes quickly and develops into a full plant.
Early stage:
Focuses on root development and initial branching
1–2 years:
Noticeable increase in height and spread
3–5 years:
Reaches mature size with a dense canopy
Its growth rate allows for effective screening in a relatively short time.
Light Requirements
Performs best in full sun.
Full sun:
Encourages dense growth and strong structure
Ideal for open, well-lit positions.
Watering Requirements
Responds well to regular watering during establishment.
During establishment:
Water consistently to support root development
Once established:
Water occasionally depending on conditions
In warmer periods:
Additional watering supports healthy growth
Consistent early watering promotes strong establishment.
Soil Preferences
Performs best in well-drained soil.
Suitable for:
Sandy soils
Loam soils
Coastal soils
Improved clay soils
Adapts well to a wide range of soil types when drainage is adequate.
Pruning and Maintenance
Low-maintenance and easy to manage.
Minimal pruning required
Can be shaped if needed for screening
Maintains a natural, flowing form
Ideal for low-maintenance landscapes.
Fertilising
Benefits from occasional feeding if required.
Apply a balanced fertiliser if needed
Organic mulch can improve soil condition
Supports healthy, vigorous growth.
Spacing Guide
For screening or windbreaks:
Plant 2 to 3 metres apart
Closer spacing creates a denser screen
Wider spacing allows individual tree form
Landscaping Uses
Casuarina ‘Greenwave’ is ideal for:
Screening and privacy
Windbreaks
Coastal and native gardens
Large landscape areas
Naturalistic planting designs
Its soft foliage adds texture and movement.
Longevity and Performance
A long-lasting and reliable tree that performs consistently over time.
Provides year-round greenery
Maintains a dense, natural canopy
Suitable for long-term landscape use
Summary
Casuarina ‘Greenwave’ is an evergreen tree growing to approximately 4–8 metres tall and 3–5 metres wide. It establishes within 3–5 years, forming a dense plant with fine, flowing green foliage.
Its natural form, versatility, and durability make it an excellent choice for screening, windbreaks, and creating soft, textured landscapes.
