Marylee Gowans has written about gardening for both online and print publications. How to Tell if a Backyard Walnut Tree Is Dead, Iowa State University: Yellowbellied Sapsucker, University of California: How to Manage Pests, University of Minnesota: Insect Pests of Deciduous Trees, Oklahoma State University: Giant Bark Aphid, Insects Are Infesting My Silver Maple Trees. Spraying the infested silver maples with a solution containing 4 teaspoons of Bacillus thuringiensis mixed with 1 gallon of water will control leaf-eating caterpillars. When a soft body is beneatha cover, the plant is likely to have live armored scales. If you see silk bags attached to the branches and twigs of your maple, these are usually the handiwork of bagworms. Learn what pests are out there, how to spot them and how to get rid of them with tree insecticide in order to keep your trees … Leaf Scorch: On maple (Acerspecies) trees a number of problems cause symptoms that are generally classified as leaf scorch. Look for defoliation of branches and leaves. The most common scale insects that infest maple trees are the armored varieties … Insects infesting silver maple trees (Acer saccharinum) range from nothing more than an annoyance to a more serious concern that can lead to the trees' defoliation and loss of vigor. These red-shouldered bugs … Silver maples are hardy in U.S. Department of Agriculture plant hardiness zones 4 through 9 and are susceptible to beetle borers, scales and aphids, according to the California Polytechnic State University, Urban Forest Ecosystems Institute website. Ohio maple syrup companies use the trees a source of sap for their product. They rarely can kill an acer tree, but they can severely damage the tree and also make it unsightly. Barkis usually intact beneath a scale. Look for holes bored into the bark of the tree, about half the size of a dime. Some have wings, and all are a grayish-brown with black dots, according to Oklahoma State University. Some pests that infest silver maples suck the sap or cell content from the trees' tender parts. If large chunks have been taken out of multiple leaves, you likely have a beetle or moth problem. If you discover that branches are also weak, you likely have a problem with clearwing borers. The worms, themselves, look like black caterpillars and usually grow to no more than 1 inch in length. Boring insects bore into the wood of silver maple trees and are typically the larval stage of moths and beetles. Preventing Maple Tree Diseases & Pests. After the insecticide kills off the bugs, siphon them out with a vacuum, then seal up the cracks with caulk to prevent new bugs from entering. Distorted, wilted and discolored leaves are common signs that silver maple trees are infested with sap-sucking pests. This infection starts in the root system and works its way up the maple tree… Those holes are usually indicative of the yellowbellied sapsucker. Seasonal Insect Invaders in New Hampshire Homes [fact sheet] Introduction. Luckily, they won’t do much damage to your home or your plants, but … You can repeat the treatment weekly if necessary, but avoid applying the solution when rain may occur within 24 hours. How to Identify Insect Damage to Maple Trees, California Polytechnic State University, Urban Forest Ecosystems Institute: Silver Maple, Clemson University Cooperative Extension Service: Home and Garden Information Center -- Maple Diseases and Insect Pests, University of California Integrated Pest Management Online: Maple, University of California Integrated Pest Management Online: Carpenterworm Management Guidelines, University of California Integrated Pest Management Online: Aphids, Scales, Thrips, Bonide Products Inc.: Bacillus Thuringiensis (Bt) Thuricide Concentrate, Bonide Products Inc.: Insecticide Soap Ready to Use. The bags are covered in twigs and pieces of leaves. Sep 25, 2019. 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