Scirpus atrovirens Willd.

vernacular green bulrush — species · Cyperaceae

USDA: SCAT2
GBIF: 2720120
Rank: species

green bulrush (Scirpus atrovirens) — Platephotograph · Peter GormanCC BY-NC-SA source · iNaturalist ↗

§2Habit & range

Growth habit: Graminoid
Duration: Perennial
Group: Monocot
Family: Cyperaceae Juss.
Genus: Scirpus

§2a

Native status, by region

CAN Canada Native
L48 Lower 48 States Native

§2b

County-level range

· 6 counties across 2 states/territories

Legend Native · 6 Introduced · 0 Both · 0 Hover a county for detail.

§3Cultivation specs · USDA

Recorded by the USDA Plant Materials Program.

§3a

Tolerances

Drought: Low
Shade: High
Moisture use: Medium
Fire: Medium
Salinity: None
Anaerobic: Medium
CaCO₃: Medium
Hedging: None

§3b

Climate & soil

Cold tolerance: -53 °F minimum
Frost-free days: 180 min.
Precipitation: 16–60 in/yr
pH range: 4–8
Root depth: 12 in min.
Fertility need: Medium
Soil texture: medium, fine

§3c

Form & growth

Growth form: Bunch
Growth rate: Moderate
Lifespan: Long
Mature height: 5.9 ft
Foliage texture: Coarse
Foliage colour: Dark Green
Porosity (summer): Moderate
Porosity (winter): Porous
Flower colour: Brown
Fruit colour: Brown
Fire resistant: No
N fixation: None
Toxicity: None

§3d

Reproduction

Bloom period: Summer
Seed abundance: Medium
Seed begins: Summer
Seed ends: Fall
Spread rate: Moderate
Stratify: No
Seeds / lb: 11,339,811
Propagation: seed, sprigs

§3e

Use & availability

Commercial availability: Routinely Available
Nursery stock: No
Graze palatability: Medium
Palatable, human: No
Lumber: No
Christmas tree: No

§4Counties, by state

Recorded in 6 counties across 2 states/territories.

Montana view state ↗ 2 N ▾

Rhode Island view state ↗ 4 N ▾

§5Sources & provenance

USDA PLANTS

Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.

plants.usda.gov/SCAT2 ↗

GBIF Backbone

Canonical taxonomic identity, synonym resolution, cross-refs. CC0.

gbif.org/species/2720120 ↗

Record version

Cached and built locally. Source version on this record:

usda-plants-mt-2026-05-25

fetched 2026-05-25T18:27:19Z