University of Maryland Extension

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Exotic Bush Honeysuckles

Exotic Bush Honeysuckles ( Lonicera maackii, L. morrowii, L. tatarica, L. xbella, L. fragrantissima) Amur honeysuckle (Lonicera maackii). Photo: Chris Evans, University of Illinois, Bugwood.org About Exotic Bush Honeysuckles: Invasive Species in Maryland Life cycle/information: These perennial...

Chinese and Japanese Wisteria

(more lawn weeds) (control options) (general weed gallery) Chinese and Japanese Wisteria ( Wisteria sinensis, Wisteria floribunda, and floribunda x sinensis hybrids ) Photo: Chris Evans, University of Illinois, Bugwood.org Life cycle/information: Asian wisterias are perennial woody vines that have...

Butterfly Bush

(more lawn weeds) (control options) (general weed gallery) Butterfly Bush (Buddleja davidii) Photo: Leslie J. Mehrhoff, University of Connecticut, Bugwood.org About Butterfly Bush: An Invasive Species in Maryland Life cycle/information: Butterfly bush, also called summer lilac, is a deciduous shrub...

Japanese Barberry

(more lawn weeds) (control options) (general weed gallery) Japanese Barberry (Berberis thunbergii) Photo: Leslie J. Mehrhoff, University of Connecticut, Bugwood.org About Japanese Barberry: An Invasive Plant in Maryland Life cycle/information: Japanese barberry is a deciduous, woody perennial shrub...

Pollinators, Neonicotinoid Insecticides, and a New Maryland Law

European honey bees, native bee species, and other pollinators in Maryland have suffered population losses in recent years. This has led to increased scrutiny of a widely used class of insecticides, known as neonicotinoids. Public concerns resulted in the passage of the Pollinator Protection Act of...

Controlling Mosquitoes

Asian tiger mosquito. Photo: Susan Ellis, Bugwood.org Wearing repellants and eliminating standing water to reduce mosquito breeding sites in your yard are two of the most effective things you can do to protect yourself from mosquito bites. In some communities, spraying for mosquitoes may be done to...

2017 Annual Report

Download a PDF copy of the 2017 Annual Report View more Annual Reports

Bradford Pear

(more lawn weeds) (control options) (general weed gallery) Bradford Pear or Callery Pear Pyrus calleryana ‘Bradford’ Photo: Leslie J. Mehrhoff, University of Connecticut, Bugwood.org About Bradford Pear: An Invasive Species in Maryland Life cycle/information: Deciduous tree bearing clusters of...

Corn Gluten for Crabgrass Control

Is corn gluten really effective in controlling lawn weeds before they germinate? Can I use it to prevent crabgrass and when is the recommended time to apply it? Corn gluten (CG) is promoted as an organic substitute for conventional preemergent herbicides. CG is a by-product of the commercial corn...

English Ivy

(more lawn weeds) (control options) (general weed gallery) English Ivy Hedera helix Photo: Chris Evans, University of Illinois, Bugwood.org About English Iv y: An Invasive Plant in Maryland Life cycle/information: English ivy is an evergreen, perennial vine. Growth habit: Fast growing and invasive...

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