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Lythrum salicaria L.
purple loosestrife

General Information
Symbol: LYSA2
Group: Dicot
Family: Lythraceae
Duration: Perennial
Growth Habit: Forb/herb
Native Status: CAN   I
L48   I
Plant Guide (pdf) (doc)
Data Source and Documentation
Plants-NRCS Logos
green round image for nativity Native blue round image for introduced Introduced ocre round image for introduced and nativity Both white round image for no status Absent/Unreported
image for native, but no county data Native, No County Data image for introduced, but no county data Introduced, No County Data both introduced and native, but no county data Both, No County Data
Native Status:
lower 48 status L48    Alaska status AK    Hawaii status HI    Puerto Rico status PR    Virgin Islands status VI    Canada status CAN    Greenland status GL    Saint Pierre and Michelon status SPM   


Symbol Scientific Name
LYSAG Lythrum salicaria L. var. gracilior Turcz.
LYSAV Lythrum salicaria L. var. vulgare DC.
LYSAT Lythrum salicaria L. var. tomentosum (Mill.) DC.


Click on a scientific name below to expand it in the PLANTS Classification Report.
Rank Scientific Name and Common Name
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
Superdivision Spermatophyta – Seed plants
Division Magnoliophyta – Flowering plants
Class Magnoliopsida – Dicotyledons
Subclass Rosidae
Order Myrtales
Family Lythraceae – Loosestrife family
Genus Lythrum L. – loosestrife
Species Lythrum salicaria L. – purple loosestrife

Subordinate Taxa

This plant has no children

Legal Status

Noxious Weed Information
This plant is listed by the U.S. federal government or a state. Common names are from state and federal lists. Click on a place name to get a complete noxious weed list for that location, or click here for a composite list of all Federal and State Noxious Weeds.
purple loosestrife
Class B noxious weed
purple loosestrife
Prohibited noxious weed
purple loosestrife
Noxious weed
purple loosestrife
B list (noxious weeds)
purple loosestrife
A list (noxious weeds)
purple loosestrife
Invasive, banned
purple loosestrife
Prohibited aquatic plant, Class 1
purple loosestrife
Noxious weed
purple loosestrife
Permit required
purple loosestrife
Secondary noxious weed 1
purple loosestrife
purple loosestrife
Sale prohibited 2
purple loosestrife
Prohibited noxious weed
purple loosestrife
Noxious weed
purple loosestrife, lythrum
Category 2 noxious weed
purple loosestrife
Noxious weed
purple loosestrife
Noxious weed
New Mexico
purple loosestrife
Class A noxious weed
North Carolina
Class B noxious weed 3
North Dakota
purple loosestrife
Noxious weed
purple loosestrife
Prohibited noxious weed
purple loosestrife
"B" designated weed
purple loosestrife
purple loosestrife
Noxious weed 4
South Carolina
purple loosestrife
Invasive aquatic plant
purple loosestrife
Plant pest
South Dakota
purple loosestrife
Noxious weed
purple loosestrife
Regulated non-native plant species
purple loosestrife
Plant pest 5
purple loosestrife
Noxious plant
purple loosestrife
Noxious weed
purple loosestrife
Class B noxious weed
purple loosestrife
Noxious weed
purple loosestrife
Class B noxious weed
purple loosestrife
Quarantine 6
purple loosestrife
Nuisance weed 7
purple loosestrife
Noxious weed
1it is illegal to import, sell, offer for sale, or distribute the seeds or the plants of purple loosestrife in any form
2any nonnative member of the genus Lythrum or hybrid of the genus is prohibited from sale
3any Lythrum spp. not native to North Carolina
4including all cultivars
5and related cultivars
6any hybrid cross
7any nonnative member of the genus Lythrum or hybrids thereof
U.S. Weed Information
Lythrum salicaria
purple loosestrife
purple lythrum
rainbow weed
spiked loosestrife
This plant and the related entity italicized and indented above can be weedy or invasive according to the authoritative sources noted below.This plant may be known by one or more common names in different places, and some are listed above. Click on an acronym to view each weed list, or click here for a composite list of Weeds of the U.S.
STATE Assorted authors. State noxious weed lists for 46 states. State agriculture or natural resource departments.
Cal-IPC California Invasive Plant Council. 2006. California Invasive Plant Inventory. Cal-IPC Publication 2006-02 (1 February 2007). California Invasive Plant Council. Berkeley, California.
N'EAST Uva, R.H., J.C. Neal,and J.M. DiTomaso. 1997. Weeds of the Northeast. Cornell University Press. Ithaca, New York.
NE&GP Stubbendieck, J., G.Y. Friisoe,and M.R. Bolick. 1994. Weeds of Nebraska and the Great Plains. Nebraska Department of Agriculture, Bureau of Plant Industry. Lincoln, Nebraska.
SEEPPC Southeast Exotic Pest Plant Council. 1996. Invasive exotic pest plants in Tennessee (19 October 1999). Research Committee of the Tennessee Exotic Pest Plant Council. Tennessee.
SWSS Southern Weed Science Society. 1998. Weeds of the United States and Canada. CD-ROM. Southern Weed Science Society. Champaign, Illinois.
WI Hoffman, R.and K. Kearns (eds.). 1997. Wisconsin manual of control recommendations for ecologically invasive plants. Wisconsin Dept. Natural Resources. Madison, Wisconsin.
WSWS Whitson, T.D. (ed.) et al.. 1996. Weeds of the West. Western Society of Weed Science in cooperation with Cooperative Extension Services, University of Wyoming. Laramie, Wyoming.

Wetland Status

Interpreting Wetland Status

Top Level Regions
Alaska OBL
Arid West OBL
Atlantic and Gulf Coastal Plain OBL
Eastern Mountains and Piedmont FACW
Great Plains OBL
Midwest OBL
Northcentral & Northeast OBL
Western Mountains, Valleys, and Coast OBL



Source Large Mammals Small Mammals Water Birds Terrestrial Birds


Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Description of Values

Value Class Food Cover