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Index / Search / Schoenoplectus pungens var. pungens

§1 Plant

Schoenoplectus pungens (Vahl) Palla var. pungens

vernacular common threesquare — variety · Cyperaceae

USDA
SCPUP5
GBIF
7227026
Rank
variety
common threesquare (Schoenoplectus pungens var. pungens)
Platephotograph · Samuel Brinker source · iNaturalist ↗

§2Habit & range

Habit and range

Growth habit
Graminoid
Duration
Perennial
Group
Monocot
Family
Cyperaceae Juss.
Genus
Schoenoplectus
§2a

Native status, by region

  • CAN Canada Native
  • L48 Lower 48 States Native
  • SPM St. Pierre & Miquelon Native
§2b

County-level range

· 489 counties across 30 states/territories
Legend Native · 489 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
High
Fire
Medium
Salinity
Medium
Anaerobic
High
CaCO₃
Medium
Hedging
None
§3b

Climate & soil

Cold tolerance
-38 °F minimum
Frost-free days
120 min.
Precipitation
12–60 in/yr
pH range
3.7–7.5
Root depth
14 in min.
Fertility need
Medium
Soil texture
coarse, medium, fine
§3c

Form & growth

Growth form
Rhizomatous
Growth rate
Moderate
Lifespan
Long
Mature height
4.9 ft
Foliage texture
Coarse
Foliage colour
Dark Green
Porosity (summer)
Dense
Porosity (winter)
Moderate
Flower colour
Blue
Fruit colour
Brown
Fire resistant
Yes
N fixation
None
Toxicity
None
§3d

Reproduction

Bloom period
Late Spring
Seed abundance
Medium
Seed begins
Summer
Seed ends
Fall
Spread rate
Moderate
Stratify
No
Seeds / lb
216,435
Propagation
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 489 counties across 30 states/territories.

Alabama view state ↗ 5 N ▾
Arkansas view state ↗ 15 N ▾
Colorado view state ↗ 3 N ▾
Delaware view state ↗ 3 N ▾
District of Columbia view state ↗ 1 N ▾
Florida view state ↗ 26 N ▾
Illinois view state ↗ 39 N ▾
Indiana view state ↗ 31 N ▾
Iowa view state ↗ 1 N ▾
Kansas view state ↗ 4 N ▾
Kentucky view state ↗ 19 N ▾
Louisiana view state ↗ 4 N ▾
Maine view state ↗ 13 N ▾
Massachusetts view state ↗ 13 N ▾
Michigan view state ↗ 1 N ▾
Minnesota view state ↗ 40 N ▾
Missouri view state ↗ 37 N ▾
Montana view state ↗ 2 N ▾
New Hampshire view state ↗ 5 N ▾
New York view state ↗ 35 N ▾
North Carolina view state ↗ 1 N ▾
Ohio view state ↗ 36 N ▾
Oklahoma view state ↗ 1 N ▾
Pennsylvania view state ↗ 36 N ▾
South Dakota view state ↗ 1 N ▾
Tennessee view state ↗ 14 N ▾
Texas view state ↗ 1 N ▾
Vermont view state ↗ 7 N ▾
Virginia view state ↗ 57 N ▾
Wisconsin view state ↗ 38 N ▾

§5Sources & provenance

USDA PLANTS

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

plants.usda.gov/SCPUP5 ↗

GBIF Backbone

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

gbif.org/species/7227026 ↗

Record version

Cached and built locally. Source version on this record:

usda-plants-mt-2026-05-26

fetched 2026-05-26T20:46:58Z