Provenance may be an important factor in determining susceptibility to these diseases, although climatic variables also play a part. On silver birch two canker fungi are particularly associated with the dieback – Discula betulina and Marssonina betulae. Fungus That Grows on Birches. The tell-tale sign of a dying birch tree is the wilting and dying of foliage from the crown, or top of the tree, along with D-shaped insect exit holes in the bark. Some varieties have reddish and yellowish bark, but even more highly valued are the white-barked types. I am pretty sure they were pruned very late in the year. Its range extends into Siberia, China, and southwest Asia in the mountains of northern Turkey, the Caucasus, and northern Iran. Damaged birch trees pose a hazard because they are susceptible to dropping branches. Weeping white birch, or silver birch as it is also called, is the European birch, Betula pendula. Like the lethal bronze birch borer, it is the larvae of the birch leaf miner which causes damage by burrowing into birch leaves in search of nutrients. As this blog makes clear, it is very pest prone, and since gardeners mostly stopped using strong insecticides, it is very difficult to keep a tree alive for more than a few years. First, cultivated birch trees often get inadequate irrigation, insufficient sun, and, given those stress factors, they suffer from diseases … There are several damaging birch tree diseases and pests. A Guide to Birch Tree Pests and Diseases Birch trees display colorful and textural bark qualities that are unusual among tree species. Betula pendula, commonly known as silver birch, warty birch, European white birch, or East Asian white birch, is a species of tree in the family Betulaceae, native to Europe and parts of Asia, though in southern Europe, it is only found at higher altitudes. And the sweet birch (Betula lenta) can live to be 250 years. Some of the most common are: Bronze Birch Borer – This potentially lethal pest can be difficult to control in birch trees. It is an invasive wood-boring beetle whose larvae bore into the layers of the tree and interrupt the flow of sap. Birch tree lifespans decrease when the trees are planted in a backyard for a variety of reasons. Since the birch trees are domesticated, its infection by the birch tree disease gives the owners an headache. Hi. are deciduous trees prized throughout landscape for their rapid growth rate and recognizable paper-like bark. The River Birch appears very similar to the White Birch varieties, with the main distinction being the color of the bark. Birch dieback is a disease of birch trees that causes the branches in the crown to die off. In an event in the Eastern United States and Canada in the 1930s and 1940s, no causal agent was found, but the wood-boring beetle, the bronze birch borer, was implicated in the severe damage and death of the tree that often followed. My Father's house has nine mature silver birch trees in the front garden. The disease may eventually kill the tree. Birch leafminer A troublesome pest for a birch tree is the Birch Leaf Miner (Fenusa pusilla) . The U.S. Department of Agriculture Forest Service notes the two most pervasive insect pests of birch trees are Birch Insects And Diseases. Prevent Birch Tree Diseases & Pests. The standard, European White Birch that was commonly used decades ago, is now difficult to find. We had around 1/3 of the height taken out of these trees a while back. Landscapers have moved to using River Birches because of better resistance to certain insect problems. Birch tree diseases are diseases which affect the barks, leaves roots and the flowers of the birch trees. 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