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  • Introduction to Invasive Plants in Maryland

    … with the wildflowers and other native plants go the insects, and with the insects go the birds. Recreational bird watching and game … species that cannot live in the forest. The invasive alien tree  Callery (a.k.a. Bradford)  pear cuts the meadow/shrub …

  • Invasives in Your Woodland: Oriental Bittersweet

    … four inches in diameter. As it grows in spirals around a tree, the vine is able to girdle and kill the tree or break off its branches under its weight. If … plants. Pollination can occur through bees and other insects. Birds and other wildlife consume the large number of …

  • Spiders in Maryland

    … are general  predators , feeding on a wide range of prey (insects, other spiders, etc.). They are beneficial to people because they feed on harmful insects. Spiders are important in reducing the numbers of … and breed undisturbed. Additional resource UMD Study Shows Tree Species Diversity Is Good for Spiders -- And Us … …

  • Brown Marmorated Stink Bug - Frequently Asked Questions

    … Some are broad-spectrum and will kill beneficial insects like honeybees and predators that eat pest insects, including BMSBs.. Use of broad-spectrum insecticides …

  • Burls

    … is a large woody, rounded swelling, usually found on a tree trunk. "Burl wood" is prized for its unusual grain … burls cannot be explained. They may develop as a result of insects, bacteria, fungi, mistletoes, or environmental … treatment is necessary. Removal of the burl may damage the tree and is not recommended. Burls can obtain a diameter of …

  • Publications

    … Issue N/G Irrigation System Check-ups Cultural Issue - Tree Decline L/N Browning and Defoliation of White Oaks …

  • Aquatic Pests: China Mark Moth and Waterlily Leafcutter

    … Kenneth W. Cummings. 1996. An Introduction to the Aquatic Insects of North America. 3d ed. Dubuque, Iowa: Kendall/Hunt …

  • The Challenge of Growing a Lawn in Maryland

    … to no floral resources to feed bees and other beneficial insects. With some 1.3 million acres devoted to lawns in … taking the following approaches. Lawn won’t grow under a tree?  Plant groundcovers instead, or put a 2” layer of organic mulch down over the tree’s root zone. Leave fallen needles under pine trees. They …

  • Spotted Lanternfly (SLF) I—Background

    … crops, as well as ornamentals and hedgerow plants.   The Tree of Heaven (TOH—an invasive tree),  Ailanthus altissima , is preferred by adults, but the … maximum sap flow. (figure G)   Honeydew secreted by the insects can stick to leaves and fruit and can lead to patches …

  • Invasives in Your Woodland: Norway Maple

    …   The Norway maple is a fast-growing deciduous tree that commonly grows to 40-50 feet in height, but may … that spin and flutter in the wind when falling from the tree. Norway maple leaves have deeper sinuses between the … areas, how to identify and control invasive plants and insects, and about news and regional online and in-person …