Species: 

Lythrum salicaria 

Common Name: 

purple loosestrife

Systems Affected (standardized): 

riparian/aquatic

Regions(s) present (updated by AB): 

NE, SE

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Impacts: 

a serious invader of many types of wetlands. It can quickly form dense stands that completely dominate the area excluding native vegetation. This plant can spread very rapidly due to its prolific seed production; each plant can produce up to 2.5 million seeds per year. It can also hybridize with native loosestrife species, potentially depleting the native species gene pool.

Source? likely to be reintroduced: 

Original introductions were accidental, with seed as a contaminant of ballast water, wool and/or live sheep, and these could still be pathways for introduction of this invasive plant elsewhere. Also, commercial nurseries sell cultivars of L. salicaria advertized as being sterile, although research has shown that these cultivars are fertile both when crossed with themselves and with wild L. salicaria populations. can still be bought from numerous suppliers of ornamental plant seed

Info Blurb: 

Can quickly form dense stands that completely dominate the area excluding native vegetation. Can spread very rapidly due to its prolific seed production. Can also hybridize with native loosestrife species, potentially depleting the native species’ gene pool.
Original introductions were accidental as a seed contaminant. Sold as an ornamental.

Native Regions in OK: 

NONE

Current and past designations: 

OWL

Present in OK?

Yes

Present in Bordering States?

TX, NM, CO, KS, MO, LA

Has Legal Status in BS?

AR NW, CO List A, NM Class A, MO NW, TX NP