Gahnia clarkei

Gahnia clarkei - 'Tall Saw-Sedge', a large sedge forming a thick tussock to 2.5m tall and 2 m wide. Gahnia is great as a screen plant for large gardens and can be used as a back drop for other foliage plants. Its large flowers are a feature while flowering and during seed set. It is perfect for wet and dry areas, but is best kept away from pedestrian traffic as it has serrated edged leaves that can cut the skin if brushed against the wrong way. It could be used as a security screen plant as it will discouage people from walking through it.

Very large tussock with lime green scabrous foliage
H: 1.5 metres to 2.5 metres W: 2 metres
Late Spring & Summer with 500mm+ long large black to brownish flowers with seed heads that produce small red seeds.
Full sun to 90% shade. Protected coastal aspects. Grows well inland and will handle cold and frost to –10ºC. Gahnia are very tough, drought tolerant plants.
Soil Type
Sandy loam, clay loam, light clays.
Trimming is rarely needed, but if so reduce the foliage by half in spring. Fertilize with slow release fertilizer after trimming.
Available Sizes
Planting Rates
Mass planting; 1 to 3/m2, Specimen planting; 1—2 per 2m2