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Invasive Plants

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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 6, 2026

Lesser Celandine

How to identify and manage invasive lesser celandine (Ficaria verna).
lesser celandine with yellow flowers
Updated: February 6, 2026

Japanese Knotweed

How to identify and mange invasive Japanese knotweed (Reynoutria japonica).
Upright clusters of tiny white flowers on stems of Japanese knotweed.
Updated: February 6, 2026

Japanese Stiltgrass in Home Landscapes

How to identify and manage invasive Japanese stiltgrass using an Integrated Pest Management approach.
Details of Japanese stiltgrass with white line down the center of leaf blades
Updated: February 6, 2026

Burning Bush

How to identify and manage burning bush, also known as winged euonymus (Euonymus alatus).
Trimmed hedge of burning bush with red autumn foliage.
Updated: February 6, 2026

Non-native Invasive Honeysuckles

How to identify and manage non-native, invasive honeysuckle shrubs.
White flowers lining an amur honeysuckle branch.
Updated: February 6, 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 6, 2026

Multiflora Rose

How to identify and manage invasive multiflora rose (Rosa multiflora).
invasive multiflora rose shrub with white flowers
Updated: February 6, 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.