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Partners in IPM: Working Groups

Invasive Plants in Trade Working Group

The Working Group on Invasive Plants in Trade is focused on the Integrated Pest Management (IPM) strategy of prevention, through working to reduce the sales of ornamental invasive plants in the North Central United States. Ornamental invasive plants are a major threat to natural resources, residential areas, and agricultural lands, yet they are still legal to buy, sell, and plant. Our goal is to work with a diverse group of stakeholders to address the issue of invasive plants in trade and develop strategies to reduce their sale. Previous efforts have focused on discussing the impacts of ornamental invasive plants and how plants are selected for regulation in our region. For 2015 we will discuss sterile ornamental plant creation, stability over time, and regulation as cultivars of many invasive ornamental plants are being developed that are reported to produce no viable seed. We wish to explore the science behind sterile cultivars of invasive plants and how these should be regulated.

Spotlight On Invasive Plants in Trade Working Group

Invasive plants impact the environment, economy and human health of citizens of the United States. While many introductions are accidental, historically a significant number of plant species were introduced as ornamentals. This pathway has led to the establishment and spread of some highly invasive species including common and glossy buckthorns (Rhamnus cathartica and Frangula alnus), Callery pear (Pyrus calleryana), Japanese barberry (Berberis thunbergii), dame’s rocket (Hesperis matronalis), and water hyacinth (Eichhornia crassipes).


Invasive Plants in Trade Working Group Priorities

A priority for this working group is to provide participants with information on invasive plants impacting the Midwest, including invasive potential of ornamental cultivars of invasive plants, impacts of invasive plants, and distribution data on ornamental plant invasions in the Midwest. They will also discuss options for reducing the sale of invasive ornamental plants in the Midwest, including legislative efforts in states such as Wisconsin, Minnesota, and Illinois; voluntary phase-out of invasive plants and increased availability of non-invasive alternatives; and the development of a certification program for invasive-free nurseries. The group will explore sterile ornamental plant creation, stability over time, and regulation of invasive plant cultivars as well as share meeting information widely throughout the region through a meeting report and a webinar.

Report on 2014 Invasive Plants in Trade Working Group Meeting