Index / Search / Glyceria obtusa
§1 Plant
Glyceria obtusa (Muhl.) Trin.
vernacular Atlantic mannagrass — species · Poaceae
§2Habit & range
Habit and range
- Growth habit
- Graminoid
- Duration
- Perennial
- Group
- Monocot
- Family
- Poaceae Barnhart
- Genus
- Glyceria
§2a
Native status, by region
- CAN Canada Native
- L48 Lower 48 States Native
§2b
County-level range
· 84 counties across 12 states/territories§3Cultivation specs · USDA
Recorded by the USDA Plant Materials Program.
§3a
Tolerances
- Drought
- Low
- Shade
- Low
- Moisture use
- High
- Fire
- None
- Salinity
- None
- Anaerobic
- High
- CaCO₃
- Medium
- Hedging
- None
§3b
Climate & soil
- Cold tolerance
- -8 °F minimum
- Frost-free days
- 140 min.
- Precipitation
- 40–50 in/yr
- pH range
- 4–7
- Root depth
- 4 in min.
- Fertility need
- Medium
- Soil texture
- medium, fine
§3c
Form & growth
- Growth form
- Rhizomatous
- Growth rate
- Rapid
- Lifespan
- Short
- Mature height
- 3.3 ft
- Foliage texture
- Fine
- Foliage colour
- Green
- Porosity (summer)
- Porous
- Porosity (winter)
- Porous
- Flower colour
- Green
- Fruit colour
- Green
- 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
- Propagation
- sprigs
§3e
Use & availability
- Commercial availability
- Routinely Available
- Nursery stock
- No
- Browse palatability
- Medium
- Graze palatability
- Medium
- Palatable, human
- No
- Lumber
- No
- Christmas tree
- No
§4Counties, by state
Recorded in 84 counties across 12 states/territories.
Delaware view state ↗ 1 N ▾
District of Columbia view state ↗ 1 N ▾
Maine view state ↗ 6 N ▾
Massachusetts view state ↗ 9 N ▾
New Hampshire view state ↗ 3 N ▾
New Jersey view state ↗ 16 N ▾
New York view state ↗ 7 N ▾
North Carolina view state ↗ 9 N ▾
Pennsylvania view state ↗ 4 N ▾
Rhode Island view state ↗ 3 N ▾
South Carolina view state ↗ 1 N ▾
Virginia view state ↗ 24 N ▾
- Accomack 51001
- Augusta 51015
- Brunswick 51025
- Caroline 51033
- Charles City 51036
- Chesapeake (city) 51550
- Chesterfield 51041
- Essex 51057
- Henrico 51087
- Isle of Wight 51093
- James City 51095
- King and Queen 51097
- King William 51101
- Lancaster 51103
- Mathews 51115
- Northampton 51131
- Northumberland 51133
- Prince George 51149
- Richmond 51159
- Rockbridge 51163
- Southampton 51175
- Spotsylvania 51177
- Sussex 51183
- Westmoreland 51193
§5Sources & provenance
USDA PLANTS
Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.
plants.usda.gov/GLOB ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/2705489 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-26
fetched 2026-05-26T12:30:10Z