BYM has the overall responsibility for taking care of the biological diversity in Oslo municipality. Inspections and controlling foreign plants is a part of the work with the urban environment in Oslo.

The contracting authority shall procure a horticultural service provider for systematic control of selected foreign plants in the contract period.

The contracting authority shall procure a service provider for controlling the following foreign species, giant hogweed, hogweed and impatiens glandulifera in Oslo municipality. The work will mainly consist of mechanical control in the form of cutting rotts and weeding with an obligation to report during the season.

There is an option for additional work in the form of mapping and/or controlling other species.