Arborists’ wood chips are the best material, but processed mulch works, too. We walked our own neighborhood in north Seattle and saw 16 birch trees. Birches are shallow rooted trees with little ability to withstand warm, dry and/or compacted soils. Call Blooma at (206) 714-9835 for a free bid in the greater Seattle area. They not only deliver young trees, but also mature trees in a wide range of sizes. Because we are planting birch trees as ornamentals, the borer has a feast right in our yards. Bronze birch borer is considered an opportunistic pest since it usually attacks trees that are weakened due to drought, stem decay, heavy pruning, and prolonged defoliation. The adult birch borer beetle has an elongated, flattened body in metallic hues of green, copper, black and blue. Your website states that effective chemical control can be made against Bronze Birch borers. Our method involves inserting “pills” of pesticide into the tree. When planted in hot, dry environments, the trees can become drought stressed and susceptible to beetle attack. Follow closely the instructions on the label (and any other directions you have). See all Betula. Mulch is a wonderful material for keeping soil moist, preventing weeds, and feeding the soil. What's happening to my birch tree? Unfortunately, if your Birch tree shows 30%+ dead, it is unlikely to recover and should be removed. Drier growing seasons have left it more suscep-tible to damage by the bronze birch borer (Agrilus anxius), which is attracted to stressed trees. The Bronze Birch Borer is a nasty insect native to eastern Washington. The Bronze Birch Borer is a wood boring beetle, common across the northern half of the United States, which attacks all birch species. Bronze birch borer. Bronze Birch borer treatment. Birch typically grows in shady, moist environments. A healthy tree can stop a borer from g… If a birch is 30% dead, or more, it should be removed. How can you tell if your birch tree has been hit with the bronze birch borer? TREE-äge G4 1-Quart – (040-4120). Look at the photos below, taken in a north Seattle neighborhood, to determine whether or not your birch tree is healthy or if it is infested. It is a serious pest on birch trees (Betula), frequently killing them. Poor tolerance of drought. Ball and J. McCullough. Hollingsworth, C.S. Once heavily damaged, our 6 Birch have virtually resurrected and are lush with full crowns again. After the new hatchlings appear, the insects chew up the inner bark of the birch tree, which kills the branches and can kill the entire tree if not treated. Tree Characteristics. Biology and life history The insect overwinters as a larva in the tree. We’re already starting to see this happen. The Bronze Birch Borer is another serious borer insect of white-barked Birch trees. If you can easily see signs of the bronze birch borer and your tree is starting to die, it’s probably too late. Remove the deadwood, using proper pruning cuts. Damage to susceptible species of birch trees can be severe, often deadly. Antonelli, A. USFS Forest Insect Pest Leaflet 111 (http://www.na.fs.fed.us/spfo/pubs/fidls/bbb/bbb.htm), Rosetta, R. 2008. It mentions that "this tree is susceptible to bronze birch borer, a wood boring beetle that will girdle the trunk. Bronze Birch Borer is decimating birch trees all over the Seattle area. This birch tree is in an advanced state of dying. The beetles detect chemicals emitted by dying and distressed trees and move in for the feast. Adults emerge about the same time as the Emerald Ash Borer, in late May-early June. How do I drench apply Merit 75 to treat Bronze Birch Borer? Do not prune when adults emerge and seek oviposition sites (late April to mid-July) as the females are attracted to fresh cuts. Should I cut my birch … Treatment such as soil drenches, bark spray, and trunk injection are all ways you can save your birch trees from the tree disease if the treatment is applied correctly. We provide full tree care services to the greater Seattle area, as well as West Seattle, Shoreline, Edmonds, and Bothell to name a few. The bronze birch borer has been a problem for over 25 years in eastern Washington and parts of Oregon, especially among ornamental birch species. Woodpeckers feed on the larvae during the winter months. Aphids can be problem on the foliage. Bronze birch borers attack trees weakened by age, environmental stresses, or previous insect attacks. Excrement from aphid feeding can leave the ground sticky beneath this tree." As always, we do provide free bids for all tree services, including birch treatment or removal. Biology and life history The insect overwinters as a larva in the tree. The adult is a copper/bronze colored slender beetle. 1. 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