Lomandra hystrix (Creek Mat Rush)
Lomandra hystrix is a robust evergreen Australian native grass-like plant known for its broad, arching foliage and strong clumping habit. It is widely used in large-scale planting, naturalistic landscapes, and areas requiring a bold, structural plant with a lush appearance.
Its larger size and flowing form make it ideal for creating impact in both residential and commercial landscapes.
Key Specifications
Botanical name: Lomandra hystrix
Common name: Creek Mat Rush
Plant type: Evergreen grass-like perennial
Mature height: 1 to 1.5 metres
Mature width: 1 to 1.5 metres
Growth rate: Moderate
Time to maturity: Approximately 3 to 4 years
Growth Habit and Structure
Lomandra hystrix forms a large, dense clump with arching foliage.
Upright at the base with gracefully arching leaves
Forms a bold, rounded clump
Creates strong structure and volume in planting
Its larger habit makes it suitable for filling space and creating visual impact.
Foliage and Appearance
The foliage is broad and textured, providing a lush, flowing effect.
Leaves are:
Long, strap-like, and wider than many Lomandra varieties
Mid to deep green in colour
Smooth and slightly glossy
The arching leaves create movement while maintaining a strong structural presence.
Growth and Establishment
Lomandra hystrix establishes steadily and develops into a substantial clump.
Early stage:
Focuses on root development and initial leaf growth
1–2 years:
Noticeable increase in size and density
3–4 years:
Reaches mature size with a full, established clump
Its steady growth allows for predictable results in landscape planting.
Light Requirements
Performs best in full sun to partial shade.
Full sun:
Encourages dense growth and strong form
Partial shade:
Maintains healthy foliage with a softer appearance
Adaptable to a range of conditions.
Watering Requirements
Responds well to consistent watering during establishment.
During establishment:
Water regularly to support root development
Once established:
Water occasionally depending on conditions
In warmer periods:
Additional watering supports lush growth
Consistent early watering promotes strong establishment.
Soil Preferences
Performs best in well-drained soil.
Suitable for:
Loam soils
Sandy soils
Improved clay soils
Adapts well to a variety of soil types when drainage is adequate.
Pruning and Maintenance
Low-maintenance and easy to manage.
Minimal pruning required
Older foliage can be removed if needed
Maintains its natural shape without trimming
Ideal for low-maintenance landscapes.
Fertilising
Benefits from occasional feeding.
Apply a slow-release fertiliser if required
Organic mulch can improve soil condition
Supports healthy, vigorous growth.
Flowering Features
Produces subtle flower spikes.
Flowers are:
Cream to yellow in colour
Held on short stems within or just above the foliage
The plant is primarily grown for its foliage and structural form.
Spacing Guide
For mass planting:
Plant 1 to 1.2 metres apart
Closer spacing creates faster coverage
Wider spacing allows full clump development
Landscaping Uses
Lomandra hystrix is ideal for:
Mass planting
Feature clumps
Naturalistic and native landscapes
Large garden beds
Commercial and public spaces
Its size and structure make it suitable for bold planting schemes.
Longevity and Performance
A long-lasting and reliable plant that performs consistently over time.
Maintains strong structure and lush foliage
Suitable for long-term planting
Provides year-round greenery with minimal care
Summary
Lomandra hystrix is a large evergreen grass-like plant growing to approximately 1–1.5 metres in height and width. It establishes within 3–4 years, forming dense clumps of broad, arching green foliage.
Its bold form, durability, and versatility make it an excellent choice for mass planting, feature clumps, and large-scale landscape designs.
