(Cyperaceae) Sedge. Vast genus of 1,500 or more species of deciduous, evergreen or herbaceous tuft-forming, perennial sedge. Found in temperate and arctic zones as well as high altitudes in tropical regions. Most species occur in bog, moorland, or damp woodland or by water. Sedges are mainly cultivated for their variegated or colourful foliage. Narrow leaves often colouring in autumn, triangular, solid and without nodes. Cut back dead foliage on herbaceous ones when dormant. Small flowers arranged in panicles, racemes or spikes. Will withstand drought once established. Most originate from New Zealand and tropical areas.