Invasive species are real threats that can have a significant cost impact. A species is regarded as invasive if it has been introduced to a location, area, or region where it did not previously occur naturally, becomes capable of establishing a breeding population in the new location without further intervention by humans, and becomes a pest in the new location. For the purpose of this article the term invasive species refers to introduced non-native plants, animals, or insects that cause damage.

The Natural Resources Conservation Service has defined Invasive species as causing harm to native species and their habitats, degrading renewable resources, and diminishing productive capacity of agricultural lands including cropland, forestlands, rangelands, and pasturelands, and negatively impacting a wide variety of human activities and needs. Usually an invasive species arises from the intentional or unintentional escape or release into an ecosystem as a result of human activity.

Connie Holland is a Penn State Master Gardener from Adams County. Penn State Cooperative Extension of Adams County is located at 670 Old Harrisburg Road, Suite 204, Gettysburg, phone 717-334-6271.

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