Arum lily is a declared weed and is one of the PHBG’s priority pests. Found along waterways and in damp areas, arum lily competes with native plants, impacting biodiversity and invades pastures posing a risk to stock due to its toxicity. Chemical treatment of arum lily is a highly effective control option. Recommended herbicides (Metsulfuron and Chlorsulfuron) are packaged in large quantities, but landholders only require a small quantity to treat infestations on their properties. This is proving to be a barrier to the control of arum lily in the South West of WA.
A number of community based organisations are repackaging commercially available herbicides into smaller packages to distribute to landholders. This option was explored by the Leschenault Biosecurity Group (LBG), who found that there were legal implications administering this service. The LBG has been liaising with relevant government authorities to work through the legalities; however, it does not look like a solution will be forthcoming in a timely fashion.
An alternative option is to negotiate directly with the commercial suppliers and local distributors of the herbicide to provide the product in smaller quantities. This project will begin at this point, and only proceed if a supply arrangement can be negotiated with commercial suppliers and local distributors. If this can be achieved, the PHBG will undertake a seasonal media campaign to promote access to the herbicide (where it can be purchased in smaller quantities), as well as directly inviting any landholder that receives a ‘Landholder Alert Letter’ for arum lily to participate in the project. The PHBG already has a number of backpack sprayers available for loan, which will also be included in the promotional material.