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Cyperaceae family

Wiegand's Sedge Carex wiegandii

Native

Wiegand's Sedge is a perennial grass native to Canada, the lower 48 states, and Saint-Pierre & Miquelon.

More about this plant

The genus Carex, the sedges, is one of the largest genera of flowering plants, containing over 2000 species, according to the Royal Botanic Gardens at Kew. In May 2015, the Global Carex Group argued for a broader circumscription of Carex, which added all the species formerly classified in Cymophyllus, Kobresia, Schoenoxiphium and Uncinia. As of May 2024, all the currently recognised species in the genus Carex are given below: Wikipedia →

Growing & care

USDA PLANTS · TRY
Conditions
Sources · Conditions
Cold hardiness (derived) — Hardiness
Hardiness
≥ zone 5 derived from its U.S. range
Size & form
Sources · Size & form
USDA PLANTS — Lifespan
Lifespan
Perennial
In the garden
Herb layer — Sits in the herb of a layered food forest or polyculture.Open guide →
Rain garden / bioswale — Rated OBL on the wetland list — tolerates wet feet, so it suits the soggy zone of a rain garden or bioswale that catches and filters runoff.Open guide →
derived roles
Species characteristics from USDA PLANTS (public domain) + TRY (CC BY) — general guidance, not a guarantee for your exact site. Deer "browsing" is documented palatability, not a deer-proof claim.

Wildlife & pollinators

How pollinator value is scored →
❧ Caterpillar hosts ~36 caterpillar species

Carex supports ~36 caterpillar species.

Native butterfly & moth caterpillars are the base of the terrestrial food web — most songbirds rear their young almost entirely on them. As a host for native Lepidoptera this is a strong genus.

Recorded feeding on Carex in North America, including:

Aletia oxygala · owlet moth Amphipoea americana · American Ear Moth Amphipoea interoceanica · Interoceanic Ear Moth Amphipoea velata · owlet moth Apamea finitima · owlet moth Apamea indocilis · Ignorant Apamea
+ 8 more species →
Biselachista cucullata · grass-miner moth Celaena reniformis · owlet moth Chortodes inquinata · owlet moth Cingilia catenaria · Chain-Dotted Geometer Cosmopterix clemensella · cosmet moth Cosmopterix ebriola · cosmet moth Cosmopterix fernaldella · cosmet moth Ctenucha brunnea · Brown Ctenucha
Keystone count (genus-level) from Warren II 2026 (CC0) · Tallamy host-use records. Named species (a documented Nearctic sample, not exhaustive) from NHM HOSTS (CC0).
Species thumbnails re-hosted from iNaturalist — Creative Commons, credited per image (hover for credit). Click any species to see it on iNaturalist. Not exhaustive; many taxa have no openly-licensed photo yet.
Sources for this entry (14) Open & cited
[01] Scientific name & family — USDA PLANTS (DwCA, Zenodo 17903503)
[02] Growth habit & duration — USDA PLANTS (DwCA, Zenodo 17903503)
[03] Native status & distribution — USDA PLANTS (DwCA, Zenodo 17903503)
[04] Common name — USDA PLANTS (via GBIF)
[05] Invasive / introduced status — USDA PLANTS (DwCA, Zenodo 17903503) — native status
[06] Wetland indicator — USACE National Wetland Plant List (2022)
[08] Description — Wikipedia (CC BY-SA)
[09] Ecological value — Warren II 2026 (CC0) · Tallamy host-use counts
[10] Conservation rank — NatureServe Explorer (CC BY)
[11] Cold hardiness (derived) — Derived from U.S. range × USDA PHZM zones
[12] Caterpillar host count — Warren II 2026 (Dryad, CC0) · Tallamy host-use counts
[13] Caterpillar species — NHM HOSTS (CC0)
[14] County range — GBIF Open Data — open-licensed occurrences (CC0/CC-BY) → county
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PlantKey’s data is open under CC BY-SA 4.0 — free to reuse and adapt, with attribution and the same licence. Photos keep their own per-image licence + credit (see Sources above).

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