Autumn Olive
The Autumn olive was originally planted in order to restore land that was deforested during the late 1800s and early 1900s. However, these fast growing trees both resist droughts and handle wet conditions, so they can adapt to a range of environments, threatening native plants. They’re especially dangerous to ecosystems from Maine to Virginia and all the way west to Wisconsin.
Autumn Olive
Black Alder
The Black alder absolutely loves water and has been around North America since it was introduced during the Colonial era. This tree can grow up up to 60 feet tall and 40 feet wide. Since it is tolerant of wet soil, it is a threat to native wetland plants.
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Black Alder