Invasive Plants or Trees

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Updated: July 15, 2021

Introduction to Invasive Plants

What are invasive plants and why are they a problem? Here are examples of invasive plants and their impact on people and wildlife.
invasive english ivy vines climbing up a tree
Updated: October 18, 2021

Natural Area Management Services Directory: Invasive Plant and Vine Control

Native ecosystems in our woodlands are under increasing pressure from invasive plant species and from both native and invasive vines. Providers of invasive plant and vine control are listed here.
Updated: October 11, 2021

Natural Area Management Services Providers Directory listings

This directory is developed by the Woods in Your Backyard Partnership and the University of Maryland Extension's Woodland Stewardship Education program. This directory serves as a way to connect land owners and managers to green industry services providers. The directory has been organized by service and alphabetically. Click or tap on the icons below to access the listings.
Updated: August 31, 2021

Invasives in Your Woodland

Since its debut as a regular Branching Out feature in 2016, "Invasives in Your Woodland" has profiled a wide variety of invasive plant species that threated the health of Maryland's ecosystems.
Updated: August 31, 2021

Invasives in Your Woodland: Japanese Knotweed

Japanese knotweed is an upright, shrubby, herbaceous perennial plant that can grow to over ten feet in height. It commonly invades disturbed areas with full or mostly full sunlight, such as roadsides. However, it can tolerate shade, as well as high temperatures, high salinity, and drought.
Japanese knotweed plants and flowers.  Photo by Britt Slattery, US Fish & Wildlife Service
Updated: August 31, 2021

Invasives in Your Woodland: Kudzu

Kudzu is a deciduous, climbing, semi-woody perennial vine that grows 35 to 100 feet long. It grows via runners, rhizomes, and from nearly every node that touches the ground. It spreads most rapidly in open areas, including disturbed areas such as abandoned fields, roadsides, and forest edges.
Kudzu infestation. Photo by Chris Evans, University of Illinois, bugwood.org
Updated: August 31, 2021

Invasives in Your Woodland: Japanese Honeysuckle

Japanese honeysuckle grows in a variety of habitats, including woodlands, wetlands, and disturbed areas, such as fence rows, roadways and rights-of-way. It is shade-tolerant and often smothers and kills native ground-level vegetation. It can also kill shrubs and saplings by girdling.
Japanese honeysuckle flowers. Photo by Chuck Bargeron, University of Georgia, bugwood.org
Updated: August 31, 2021

Invasives in Your Woodland: Garlic Mustard

Garlic mustard is a biennial flowering plant in the mustard family that is an aggressive invader of woodlands throughout the United States.
Garlic mustard plants and flowers.  Photo by Ansel Oommen, Bugwood.org
Updated: August 30, 2021

Invasives in Your Woodland: Multiflora Rose

Multiflora rose is one of the most common invasive plants in the mid-Atlantic region. Read how to identify it, how to keep it from spreading, and how to keep it in check.
Multiflora rose plants and flowers. Photo by Rob Routledge, Sault College, Bugwood.org
Updated: August 30, 2021

Invasives in Your Woodland: Autumn Olive

Autumn olive is now considered an invasive plant species for a variety of reasons. While it is not illegal to sell the plant in every jurisdiction where it exists, many natural resources management agencies and organizations discourage property owners from further planting.
Autumn olive foliage. Photo by Leslie J. Mehrhoff, University of Connecticut, Bugwood.org