Prohibited noxious species must be eradicated by landowners. They are non-native with currently restricted or local distribution in Alberta that present risks of spreading and causing significant economic or ecological impact. They are also non-native species not currently established in Alberta but that occur in neighboring jurisdictions, cause significant economic or ecological impact in those jurisdictions, and are well adapted to Alberta conditions.

The following Prohibited Noxious species are managed under the Weed Control Act