Species: 

Nasturtium officinale

Common Name: 

watercress

Systems Affected (standardized): 

riparian/aquatic

Regions(s) present (updated by AB): 

ALL

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Impacts: 

When N. officinale was newly invasive it reportedly had dramatic impacts on existing habitats and their native flora and fauna, reputedly blocking waterways in parts of the USA and of New Zealand, altering habitat structure and composition. Over time, however, it seems to have become less aggressive and is now considered just one of a number of alien aquatic weeds in waterways.

Source? likely to be reintroduced: 

widely grown as a crop,may become even more widely spread in future, most likely to be the result of its deliberate introduction as a food plant. Accidental introduction could result from contaminated aquarium stock, although this would be unlikely to legally pass modern biosecurity border checks.

Info Blurb: 

Reportedly had dramatic impacts on habitats and their native flora and fauna, reputedly blocking waterways and altering habitat structure and composition. Grown as a crop.

Native Regions in OK: 

NONE

Current and past designations: 

TX

Present in OK?

Present in Bordering States?

OK, TX, NM, CO, KS, MO, AR, LA

Has Legal Status in BS?

NONE