Lachnagrostis Billardieri (River Tussock Grass)
Lachnagrostis Billardieri (River Tussock Grass)
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Lachnagrostis billardieri (River Tussock Grass) is a hardy Australian native grass that forms soft, flowing clumps of fine green foliage with delicate airy seed heads. Its graceful texture adds movement and natural structure to garden spaces while maintaining a clean and low maintenance appearance throughout the year.
This grass is well suited to riparian plantings, native gardens, and restoration areas where soil stabilisation and erosion control are important. It performs reliably in moist to moderately dry conditions and adapts well to a range of soil types. Customers choose it for its resilience, ecological value, and ability to support biodiversity by providing habitat and shelter for insects and small wildlife while contributing to sustainable landscape design.

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Mature height
0.3–1 m
Mature width
0.3–0.8 m
Spacing
0.4–0.7 m
Evergreen/Deciduous
Evergreen
Foliage
Bright green to mid green foliage; pale green to straw coloured airy flower heads
Flowering Period & Fruit Development/Harvest
Spring to summer [September–February] (seed heads mature to fine straw coloured clusters after flowering)
Sun tolerance
Full sun to partial shade
Maintenance
Low maintenance; remove old tussocks and spent flowering stems to encourage fresh growth
Root System
Moderately deep, fibrous tufted root system; non invasive; typically 20–70 cm depth