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
· 256 counties across 19 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 256 counties across 19 states/territories.
Delaware view state ↗ 2 N ▾
District of Columbia view state ↗ 1 N ▾
Idaho view state ↗ 4 N ▾
Illinois view state ↗ 65 N ▾
- Adams 17001
- Alexander 17003
- Boone 17007
- Brown 17009
- Calhoun 17013
- Carroll 17015
- Cass 17017
- Champaign 17019
- Christian 17021
- Coles 17029
- Cook 17031
- Crawford 17033
- Cumberland 17035
- DeKalb 17037
- Douglas 17041
- DuPage 17043
- Edgar 17045
- Effingham 17049
- Fayette 17051
- Fulton 17057
- Grundy 17063
- Hancock 17067
- Henderson 17071
- Iroquois 17075
- Jackson 17077
- Jasper 17079
- Jefferson 17081
- Kane 17089
- Kankakee 17091
- Kendall 17093
- Lake 17097
- LaSalle 17099
- Lawrence 17101
- Lee 17103
- Livingston 17105
- Macon 17115
- Macoupin 17117
- Marshall 17123
- Mason 17125
- Massac 17127
- McDonough 17109
- McHenry 17111
- McLean 17113
- Menard 17129
- Montgomery 17135
- Morgan 17137
- Moultrie 17139
- Peoria 17143
- Pope 17151
- Pulaski 17153
- Richland 17159
- Rock Island 17161
- Sangamon 17167
- Schuyler 17169
- Scott 17171
- St. Clair 17163
- Tazewell 17179
- Union 17181
- Vermilion 17183
- Wayne 17191
- Whiteside 17195
- Will 17197
- Williamson 17199
- Winnebago 17201
- Woodford 17203
Indiana view state ↗ 2 N ▾
Iowa view state ↗ 2 N ▾
Massachusetts view state ↗ 14 N ▾
Michigan view state ↗ 34 N ▾
- Alcona 26001
- Antrim 26009
- Arenac 26011
- Berrien 26021
- Calhoun 26025
- Charlevoix 26029
- Cheboygan 26031
- Chippewa 26033
- Delta 26041
- Gogebic 26053
- Gratiot 26057
- Houghton 26061
- Huron 26063
- Ingham 26065
- Isabella 26073
- Jackson 26075
- Kalamazoo 26077
- Kent 26081
- Lapeer 26087
- Livingston 26093
- Macomb 26099
- Mason 26105
- Menominee 26109
- Midland 26111
- Muskegon 26121
- Oakland 26125
- Ontonagon 26131
- Ottawa 26139
- Presque Isle 26141
- Sanilac 26151
- St. Clair 26147
- Van Buren 26159
- Washtenaw 26161
- Wayne 26163
Missouri view state ↗ 2 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
North Dakota view state ↗ 1 N ▾
Ohio view state ↗ 69 N ▾
- Adams 39001
- Ashland 39005
- Ashtabula 39007
- Athens 39009
- Auglaize 39011
- Belmont 39013
- Brown 39015
- Butler 39017
- Carroll 39019
- Champaign 39021
- Clark 39023
- Clermont 39025
- Clinton 39027
- Columbiana 39029
- Coshocton 39031
- Cuyahoga 39035
- Darke 39037
- Delaware 39041
- Erie 39043
- Fairfield 39045
- Franklin 39049
- Gallia 39053
- Geauga 39055
- Greene 39057
- Guernsey 39059
- Hamilton 39061
- Harrison 39067
- Highland 39071
- Hocking 39073
- Holmes 39075
- Huron 39077
- Jackson 39079
- Jefferson 39081
- Knox 39083
- Lake 39085
- Lawrence 39087
- Licking 39089
- Lorain 39093
- Lucas 39095
- Madison 39097
- Mahoning 39099
- Medina 39103
- Meigs 39105
- Miami 39109
- Monroe 39111
- Morgan 39115
- Morrow 39117
- Muskingum 39119
- Noble 39121
- Ottawa 39123
- Perry 39127
- Pike 39131
- Portage 39133
- Preble 39135
- Richland 39139
- Ross 39141
- Sandusky 39143
- Scioto 39145
- Seneca 39147
- Stark 39151
- Summit 39153
- Trumbull 39155
- Tuscarawas 39157
- Vinton 39163
- Warren 39165
- Washington 39167
- Wayne 39169
- Williams 39171
- Wyandot 39175
Pennsylvania view state ↗ 3 N ▾
Vermont view state ↗ 3 N ▾
Virginia view state ↗ 1 N ▾
Washington view state ↗ 1 N ▾
West Virginia view state ↗ 2 N ▾
Wisconsin 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 2026-05-26T20:46:58Z