Isolepis Nodosa (Knobby Clubrush)
Isolepis Nodosa (Knobby Clubrush)
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Isolepis Nodosa (Knobby Clubrush) is an attractive, clumping aquatic plant commonly found in wetlands and water gardens. This grass-like rush features green, cylindrical stems topped with small, knobby clusters that add unique texture to water features. Its natural habitat is typically found along the edges of ponds or streams, where it thrives in damp conditions.
This low-maintenance, hardy plant adds vertical interest and softens the appearance of water gardens. Knobby Clubrush is also ideal for planting in containers or along the edge of a pond where it can be partially submerged. It’s an excellent choice for native or water-wise gardens.


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Mature height
0.3–0.5 metres
Mature width
0.3–0.4 metre
Spacing
0.5–1 metre
Evergreen/Deciduous
Evergreen
Foliage
Green stems with knobby, round flower heads
Flowering Period & Fruit Development/Harvest
Late summer to autumn [December–May]
Sun tolerance
Full sun to partial shade
Maintenance
Low maintenance. Tidy up spent flowers and remove any dead material. Keep the soil moist, especially during dry spells.