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Invasive species are one of the greatest threats to the integrity of natural communities and also a direct threat to the survival of many indigenous species. As a result, we engage in efforts to identify the most problematic species and to manage them when and where it is possible.
Of the 2263 plant species in Massachusetts that have been documented as native or naturalized (established newcomers introduced directly or indirectly by man), about 725 (32%) are naturalized. Of these, the Massachusetts Invasive Plant Advisory Group (MIPAG), a committee where NHESP is represented, recognized 69 species as "Invasive," "Likely Invasive," or "Potentially Invasive."
Once the 69 plant species were recognized by "MIPAG", the Massachusetts Department of Agricultural Resources issued a Rulemaking, adding them to a list of noxious weeds regulated with prohibitions on importation, propagation, purchase and sale in the Commonwealth. Also, the Massachusetts Association of Conservation Commissions (MACC) now encourages Commissioners to consider the wetland impacts of these invasive species during project reviews as part of their jurisdiction under the Wetland Protection Act.
Many good references exist in libraries, book stores, and on line to help with making accurate plant identifications.
In 2004, MIPAG completed a report offering recommendations for managing invasive plants in Massachusetts Strategic Recommendations for Managing Invasive Plants in Massachusetts. All state agencies within EEA are contributing in some way to this effort. It is important that management strategies be well researched and planned; otherwise scarce funds and human resources could be wasted. Information on the biology of invasive species and their management is increasing dramatically and much can be found on the web. New scientific journals have arisen that deal specifically with invasive species research.
During holiday seasons, many people use plants to decorate their homes or businesses. We highly recommend that people avoid using certain exotic, invasive plants such as Oriental bittersweet (Celastrus orbiculatus) and Multiflora rose (Rosa multiflora) in holiday decorations. Though these plants are attractive, it is best to refrain from using them. Birds eat and carry away the fruits from wreaths and garlands and the digested but still-viable seeds sprout where deposited.
Exotic, invasive plants create severe environmental damage, invading open fields, forests, wetlands, meadows, and backyards, and crowding out native plants. Bittersweet can even kill mature trees through strangling. Both plants are extremely difficult to control: when cut off, the remaining plant segment in the ground will re-sprout. It is illegal to import or sell bittersweet and multiflora rose in any form (plants or cuttings) in Massachusetts.
You can learn more about invasive plants from our publication: "A Guide To Invasive Plants". In the Guide, each invasive plant description includes:
Similar plant species are also briefly described to aid in plant identification. The Guide includes:
To purchase a guide from MassWildlife, stop in the Field Headquarters office in Westborough during business hours or send in our order form.
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