Greater pond sedge (Carex riparia) stands out as the tallest among British native sedges, boasting long, triangular strap-like leaves ranging from mid to blue-green hues, adorned with striking black flower heads in early summer. This unique combination of foliage and blooms adds a touch of distinct style. It's worth noting that this sedge is quite vigorous and benefits from containment in baskets in smaller ponds. Avoid planting it in shallow or boggy areas where its vigorous growth could dominate.This plant excels in stabilizing banks and provides excellent cover for birds and wildlife, particularly when planted in clusters. It's particularly beneficial in environments frequented by ducks, as its robust nature withstands regular cropping for nesting materials. Once established, it thrives in water depths of several feet.