The introduction of invasive species within Westchester County and throughout the United States threatens the balance and resiliency of our ecosystems. The problems caused by invasive species lead to ramifications that extend far beyond the reaches of our forests, waterways, and open spaces. In fact, the environmental degradation caused by invasives affects our own health and well-being and that of our economy at large.
The most foolproof way to prevent the introduction and proliferation of invasive plant species is to avoid planting them in the first place. In September 2018, Westchester County Executive George Latimer signed an Executive Order to protect Westchester’s native plants. The order strictly prohibits the installation of invasive plant species on any County property and encourages the use of native plants instead.
Westchester County residents can apply the same principles to their own properties. Before planting anything new in your yard, verify that the species is not invasive. The Lower Hudson Partnership for Regional Invasive Species Management has a useful database for determining invasive classification.
Opt for incorporating native plants into your landscaping plans whenever possible. Native plants are species that naturally occur in this region and that have evolved over thousands of years to thrive in our area’s specific climate and soil conditions. Not only are native plants just as attractive as ornamental varieties, they often require less maintenance and provide critical food and habitat to our native wildlife and pollinators.
The National Wildlife Federation provides listings of native plants specific to your ZIP code via their online tool. There are many sources from which to purchase native plants. The Native Plant Center in Valhalla conducts an annual sale each spring and many area nurseries carry a variety of native plants that are garden-friendly.
See Native Plants for comprehensive coverage of native plant lists, sources, and best practices.
Section III lists the top invasive species in this region along with tips for identifying that specific species (including possible lookalikes) and best methods for removal. We strongly recommend non-chemical solutions for removing the invasive species when possible.