Index / Search / Acorus americanus
§1 Plant
Acorus americanus (Raf.) Raf.
vernacular sweetflag — species · Acoraceae
§2Habit & range
Habit and range
- Growth habit
- Forb/herb
- Duration
- Perennial
- Group
- Monocot
- Family
- Acoraceae Martinov
- Genus
- Acorus
§2a
Native status, by region
- AK Alaska Native
- CAN Canada Native
- L48 Lower 48 States Native
§2b
County-level range
· 74 counties across 9 states/territories§3Cultivation specs · USDA
Recorded by the USDA Plant Materials Program.
§3a
Tolerances
- Drought
- None
- Shade
- High
- Moisture use
- High
- Fire
- None
- Salinity
- None
- Anaerobic
- High
- CaCO₃
- Low
- Hedging
- None
§3b
Climate & soil
- Cold tolerance
- -38 °F minimum
- Frost-free days
- 120 min.
- Precipitation
- 16–65 in/yr
- pH range
- 5.6–7.2
- Root depth
- 10 in min.
- Fertility need
- Medium
- Soil texture
- medium, fine
§3c
Form & growth
- Growth form
- Rhizomatous
- Growth rate
- Moderate
- Lifespan
- Moderate
- Mature height
- 3.9 ft
- Foliage texture
- Medium
- Foliage colour
- Green
- Porosity (summer)
- Dense
- Porosity (winter)
- Moderate
- Flower colour
- Yellow
- Fruit colour
- Green
- 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
- Slow
- Stratify
- No
- Propagation
- sprigs
§3e
Use & availability
- Commercial availability
- Routinely Available
- Nursery stock
- No
- Graze palatability
- Low
- Palatable, human
- No
- Lumber
- No
- Christmas tree
- No
§4Counties, by state
Recorded in 74 counties across 9 states/territories.
Delaware view state ↗ 2 N ▾
District of Columbia view state ↗ 1 N ▾
Massachusetts view state ↗ 14 N ▾
New Jersey view state ↗ 11 N ▾
New York view state ↗ 37 N ▾
- Albany 36001
- Bronx 36005
- Broome 36007
- Cattaraugus 36009
- Columbia 36021
- Delaware 36025
- Dutchess 36027
- Erie 36029
- Essex 36031
- Genesee 36037
- Herkimer 36043
- Jefferson 36045
- Lewis 36049
- Madison 36053
- Monroe 36055
- Nassau 36059
- New York 36061
- Niagara 36063
- Oneida 36065
- Onondaga 36067
- Orange 36071
- Oswego 36075
- Putnam 36079
- Queens 36081
- Rensselaer 36083
- Richmond 36085
- Rockland 36087
- Schenectady 36093
- Schuyler 36097
- St. Lawrence 36089
- Suffolk 36103
- Sullivan 36105
- Tompkins 36109
- Ulster 36111
- Warren 36113
- Washington 36115
- Westchester 36119
Pennsylvania view state ↗ 3 N ▾
Vermont view state ↗ 3 N ▾
Virginia view state ↗ 1 N ▾
West Virginia view state ↗ 2 N ▾
§5Sources & provenance
USDA PLANTS
Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.
plants.usda.gov/ACAM ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/8121012 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-26
fetched 2026-05-26T05:45:41Z