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Bacterial Blights of Lilac

(More diseases of trees and shrubs) Key Points The most visible symptoms of bacterial blight on lilac are the blackening of new green shoots, leaves, and flower buds during rainy, mild spring weather. Older woody stems are rarely attacked. In Maryland, spring frost damage and late fall or winter...

Meet a Pollinator: Cellophane Bee

Colletes thoracicus. Photo by Hadel Go Cellophane Bee (Colletes thoracicus) An important pollinator of plants and not aggressive/defensive Host plant families include Apiaceae (carrots), Rosaceae (stone fruits), among others Underground cells are lined with clear “cellophane-like” material that the...

Why Are Leyland Cypress Trees Turning Brown

Warm falls followed by cold winters can take its toll on Leyland cypress trees. Leyland cypress (x Cupressocyparis leylandii ) has a lot going for it. It’s fast-growing with evergreen, feathery foliage and a pleasing, slender profile. It makes an excellent specimen tree or screening plant. A cross...

Autumn Olive

Back to Invasive Plant Photos and Information Autumn Olive (Elaeagnus umbellata) Photo: Chris Evans, University of Illinois, Bugoood.org About Autumn Olive: An Invasive Species in Maryland Life cycle/information: This deciduous woody plant was introduced from Asia to the United States in 1830...

Exotic Bush Honeysuckles

Back to Invasive Plant Photos and Information 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...

Chinese and Japanese Wisteria

Back to Invasive Plant Photos and Information 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 been planted...

Butterfly Bush

Back to Invasive Plant Photos and Information 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 bearing...

Japanese Barberry

Back to Invasive Plant Photos and Information 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. It is used...

Pollinators and Pesticides

Bumble bee. Photo: David Cappert, Bugwood.org Pollinator Protection Act of 2016 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...

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...

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