Family: Cyperaceae
Common Name: Sedge

Many species of Carex are native to New Zealand and are somewhat tender in the north. They are found mainly in wet or moist habitats. Sedges differ from grasses and rushes in that they have solid stems and sheathing leaf bases. The leaves are flat and grass-like, and the tiny brown or green flowers, sometimes just like 'seeds', form clusters or spikes, which are suitable for dried flower arrangements. Carex is suitable for rock, pebble or water gardens, or around ponds. Some species can be invasive but most are attractive grassy plants which make good garden features.

Species

Among the most suitable hardy species for British gardens are C. comans, with clumps of very fine leaves, bronze-coloured in some forms; the yellow-leaved C. elata 'Aurea'; and white and green striped C. morrowii 'Variegata'. All are suited to zone 7.

C. secta, common along the waterways of New Zealand, forms thick tussocks and is very useful for stabilizing bank erosion. It has light gray-green leaves and sometimes grows to 1 m (3 ft) in height. It is also suited to zone 7.

Cultivation

Sedges require moist conditions and humus-rich soil, and sun or partial shade. Propagate by division in spring.

Climate

Zone 9 for most species.