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Invasive Woody Plants

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Updated: January 27, 2026

Weed Identification Photos in Maryland

Identify common Maryland weeds using our extensive collection of photos.
flowering ground ivy
Updated: August 26, 2024

Introduction to Invasive Plants in Maryland

What are invasive plants and why are they a problem? Here are examples of invasive plants and their impact on people and wildlife.
trees covered with English ivy vines
Updated: February 22, 2023

Invasive Species

What are invasive species? How to identify invasive plants, insects, and diseases and how to manage them in the landscape.
invasive oriental bittersweet vines
Updated: February 5, 2026

Multiflora Rose

How to identify and manage invasive multiflora rose (Rosa multiflora).
invasive multiflora rose shrub with white flowers
Updated: February 5, 2026

Oriental Bittersweet

How to identify and manage invasive Oriental bittersweet (Celastrus orbiculatus).
Clusters of red-orange berries with yellow-orange covers on bare Oriental bittersweet branches in winter.
Updated: February 4, 2026

Porcelainberry

How to identify and manage invasive porcelainberry (Ampelopsis brevipedunculata).
Teal, blue, and violet-colored berries on a porcelainberry vine stem.
Updated: February 4, 2026

Tree-of-Heaven

How to identify and manage invasive tree-of-heaven (Ailanthus altissima).
Flower clusters on the branch tips of a mature Tree of Heaven.
Updated: February 3, 2026

Autumn Olive

How to identify and manage invasive autumn olive (Elaeagnus sp.).
invasive autumn olive shrub with creamy white flowers
Updated: February 3, 2026

Non-native Invasive Honeysuckles

How to identify and manage non-native, invasive honeysuckle shrubs.
White flowers lining an amur honeysuckle branch.
Updated: January 31, 2026

Norway Maple

How to identify and manage invasive Norway maple (Acer platanoides).
Norway maple leaves and seed cluster.