|The cultivar, 'Variegata' has long arching leaves, boldly striped with green leaves and narrow white or yellow stripes.
C. riparia spreads aggressively by rhizomes, and grows near ponds and slow-moving rivers. The sedge family is especially common in wet or moist habitats and in temperate and subarctic zones. The stems of sedges are solidly filled with pith, and do not have nodes. They are triangular in cross section. The leaves are arranged in three rows, with sheaths usually fused around the stem. Leaf blades of sedges are usually grass-like; with evergreen or semi-evergreen foliage. Sedges are wind-pollinated, with flower-heads almost always in spikelets.