Species: 

Verbascum thapsus

Common Name: 

common mullein

Systems Affected (standardized): 

rangeland, forest/woodland, urban/garden, disturbed/waste areas

Regions(s) present (updated by AB): 

ALL

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Impacts: 

Once established it grows quickly to form a dense ground cover. It can overtake and displace native species. At the high densities, it appears to prevent establishment of native herbs and grasses following fires or other disturbances. In many areas and vegetation types, common mullein is a short-lived member of disturbed communities whose abundance decreases with increased time since disturbance. However, in parts of California and in Hawaii, common mullein may form dense and persistent populations. Although common mullein is eventually replaced by regenerating shrubs, it may restrict the establishment of native early-seral forbs and grasses and disrupt normal succession in the Sierra Nevada

Source? likely to be reintroduced: 

V. thapsus is widely available as an ornamental and is still used as a herbal remedy, so escape is a continuing threat. However, the risk of introduction and reintroduction in managed areas may be minimal; it produces many seeds, but has no specialized mechanism for dispersal. In addition, the seedlings require open, bare ground and may not establish well in late successional communities.

Info Blurb: 

Can form a dense ground cover, displacing native species. At the high densities, it appears to prevent establishment of native herbs and grasses following fires or other disturbances. Utilized as an ornamental and as an herbal medicine.

Native Regions in OK: 

NONE

Current and past designations: 

OKPS

Present in OK?

Present in Bordering States?

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

Has Legal Status in BS?

CO List C