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  • Tips for Choosing Trees and Shrubs

    … This southern magnolia's blossoms and glossy foliage make it a wonderful specimen plant. But … area. Updated: March 7, 2023 Select an appropriate tree or shrub for the site Overgrown dwarf Alberta spruce blocking …

  • Fertilizing Trees and Shrubs and Nutrient Deficiency Symptoms

    … Updated: February 17, 2023 Do newly planted trees and shrubs need fertilizer? In most landscapes, healthy trees … available at a uniform rate over the entire season. Many tree and shrub fertilizers are a combination of slow-release and

  • FAQs: Plant and Insect Identification

    … is home to a diverse variety of native trees, plants and insects, as well as some unwelcome non-native … Cost Share Assistance page . How do I distinguish one tree from another? Identifying trees is one of the greatest … Threats: Invasive Plants and Shrubs .   … FAQs: Plant and Insect Identification …

  • Boxwood: Identify and Manage Common Problems

    … Updated: August 12, 2024 Key points Boxwood ( Buxus  spp.) are broad-leaved evergreen, deer-resistant shrubs that are … spring Volutella Blight Branch Dieback Oystershell shaped scale covers found on bark of affected branches Oystershell … all can lead to poor growth of boxwoods. Multiple insects (mites, leafminers, scales,  psyllids ) and diseases …

  • Growing Flowering Dogwood Trees

    … dogwood (Cornus florida) is a small Maryland  native tree with white or pink bracts (specialized leaves resembling … the spring, colorful red to burgundy foliage in the fall, and red berries that support wildlife. The key to maintaining … to decline. Refer to our pages about planting a tree or shrub for step-by-step instructions. Caring for your tree

  • Pollinator Friendly Plant Production 2: Controlling Insect Pests (FS-1095)

    … Stanton Gill FS-1095  |  February 2020 Pollinator Friendly Plant Production 2: Controlling Insect Pests As any … only too well, nursery management is a continuous process of solving problems, particularly damage caused by pests and … species and Heterorhabditis species are two major types of nematodes available. Spinosad is a short-residual …

  • Losing Your Trees to the Sea? (FS-2022-0645)

    … Updated: June 23, 2023 By Dr. Kate McClure , and Agnes Kedmenecz FS-2022-0645  |  May 2023 Losing Your … conditions can cause stress and can limit growth rates and tree regeneration. Stress caused by flooding and saltwater … of reduced tree health and vigor, including increase in insect problems, sparse crown, low growth, mortality, short …

  • Azaleas and Rhododendrons: Identify and Manage Problems

    … offer a wide range of flower colors in the spring and are one of the most popular landscape plants in Maryland.  … may also have sooty mold (black coating) Azalea Bark Scale Leaf Yellowing Brightly colored, yellow-orange spots … with honeydew, then sooty mold; flat, oval transparent insects on the lower leaf surface Azalea Whitefly Leaf …

  • Conifer Bark Beetles on Trees and Shrubs

    … usually less than 8mm. They are brown to black in color and cylindrical in shape. The beetles generally attack trees … pheromone, which attracts more bark beetles to the tree under attack. Beetles often carry pathogenic fungi such … stain that are deposited in the vascular system of the tree. These fungi quickly multiply and clog the water …

  • Tree and Shrub Galls

    … Updated: February 28, 2023 Galls are unusual growths on tree leaves or branches. They are caused by insects. They are … are abnormal swellings of plant tissue, usually on leaves and twigs. Insects, mites, bacteria, fungi, or nematodes may … 2020 Related information Eyespot Galls on Trees … Tree and Shrub Galls …