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Swamp Carex

Carex senta

Care
Sun

part shade

Water

moderate

Soil

Standing

Container

Friendly

Edible

Tubers eaten cooked; traditional Indigenous food source

Native Range

Freshwater marshes and riparian wetlands throughout California from sea level to 5,000 ft elevation

Care Guide

Planting

Plant Swamp Carex in partial shade in a location with consistently wet soil - this native loves standing water and streambank conditions, so bog gardens, rain gardens, and wet swales are ideal. It tolerates a wide range of elevations and can handle both containers and in-ground planting. Plant in fall or early spring to give it time to establish before summer.

After Planting

Water moderately to heavily during the first growing season to keep soil consistently moist; this plant actually prefers wetter conditions than most California natives, so don't let it dry out completely. Once established, Swamp Carex maintains its own moisture needs if planted in a naturally wet spot, but container plants will need regular watering year-round. The biggest mistake is treating it like a drought-tolerant California native - it's a water lover that will struggle in dry gardens or with infrequent watering.

Visit Calscape for more information about Swamp Carex

Endangered & Threatened Species Supported
Least Bell'S VireoVireo bellii pusillus

Southern California endemic subspecies

Federal: Endangered, CA: Endangered
Dusky-footed WoodratNeotoma fuscipes

California Species of Special Concern, habitat fragmentation and loss

CA: Threatened, CA Special Concern
Wildlife Supported

Birds

Nesting · Spring

nests in dense sedge tussocks March-July; relies on cover for predator avoidance

Shelter · Spring

dense sedge cover provides nesting habitat and predator concealment April-June in coastal sage scrub

Foliage · Spring

forages for insects associated with sedge vegetation April-August during breeding season

Nesting · Spring

uses sedge tussocks for nesting material collection March-May

Mammals

Foliage · Year-Round

browsed opportunistically when available; more heavily utilized in winter when other forage limited

Foliage · Year-Round

incorporated into nest material and supplemental diet year-round in coastal scrub and woodland habitats

Where to Buy
Native Here Nursery

101 Golf Course Dr, Tilden Regional Park, Berkeley

Sat 10am-2pm

3.0 mi(510) 549-0211WebsiteDirections