Isolepis cernua (Live Fibre Optic Grass)
Isolepis cernua (Live Fibre Optic Grass)
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Isolepis cernua, commonly known as Fibre Optic Grass, is an attractive ornamental perennial admired for its fine, arching green stems tipped with tiny silvery-white flower heads. Its delicate, fountain-like growth habit resembles glowing fibre optic strands, creating a soft, graceful appearance. This unique plant is ideal for decorative containers, water gardens, pond edges, terrariums and moisture-loving garden beds.
This versatile, low-maintenance plant thrives in full sun to partial shade and prefers consistently moist to wet soil. It is particularly well suited to bog gardens and shallow water features, where its slender foliage creates beautiful movement and texture. Regular watering is essential, as the plant does not tolerate prolonged drying out.

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Mature height
0.15–0.3 m
Mature width
0.2–0.4 m
Spacing
0.2–0.3 m
Evergreen/Deciduous
Evergreen in mild climates
Foliage
Silvery-white to pale brown
Flowering Period & Fruit Development/Harvest
Spring to summer
Sun tolerance
Full sun to partial shade
Maintenance
Low
Root System
Fine, fibrous roots