California black-flowering sedge

Planting

Plant your California black-flowering sedge in partial shade to deep shade, in a location where you can keep the soil consistently moist - it thrives in the damp zones near streams and marshes. This sedge is flexible about soil type and will grow in rocky, gravelly, sandy, or clay soils as long as water is available, so drainage isn't a concern as long as you're prepared to water regularly. Space plants 1 to 2 feet apart to give each mounding tussock room to develop its dense form.

After Planting

Water weekly during summer to keep the soil moist; this is the one non-negotiable requirement for success. Once established in year two, you can reduce watering frequency slightly but never let it dry out completely during warm months. This is a deciduous sedge, so expect it to die back in winter - leave the dead foliage in place until spring cleanup, as it protects the crown. The most common mistake is underwatering; remember this plant evolved in constantly moist streamside habitat, so err on the side of too wet rather than too dry.

Birds

higCalifornia clapper rail

Foliage · Year-Round

nesting and cover in marsh habitat where C. nudata occurs

higSaltmarsh Common Yellowthroat

Nesting · Spring

April-June breeding season, uses sedges for nest structure

Mammals

higOrnate shrew

Shelter · Year-Round

uses dense sedge clumps for cover and nesting tunnels

Insects

modCalifornia amphipod

Shelter · Year-Round

associated with sedge root systems in marsh substrate