These are all serious problems. When glyphosate herbicides are sprayed on weeds near the tree, the tree absorbs the wetting agent, leading to reduced disease-resistance and weakened bark. Hopefully the tree will survive. The tree will heal on its own, forming callused scabs. There does seem to be a white fungus growing on a branch I cut back last year. This hasn't happens in years. Paint the trunk only when it has no open wounds. Tree seems fully this year than most. You don't mention if the tree seems to be growing poorly only that it has a dead branch. I don't water it weekly. Clemson Cooperative Extension: Ornamental Cherry, Plum, Apricot, and Almond, University of California, Davis: Sweet Cherries for the Home Grounds. Your problems may be related to these winter of have other causes. Wishhart holds a Bachelor of Arts in fine arts and English literature from the University of California, Santa Cruz. The peeling bark in your middle photo looks normal and caused by growth of the trunk below. Ants love this. I see from your picture that fungus is in the trunk of the tree not just the dead branch. I'm in Michigan. The presence of the white mold makes me think there is a wood rotting fungi inside the tree and it will slowly die.The gummois (ooze on the tree) is a response by the tree to an injury much like running a fever when you are sick. Trees that are stressed due to frost damage, mechanical injury or lack of water are more likely to develop canker. Diseased branches should be burned or otherwise destroyed to keep the disease from spreading. Splitting or peeling bark is often a sign of frost damage, though it may also be caused by disease or herbicide injury. To prevent this, paint the trunk with whitewash to help reflect light. Does a Eucalyptus Tree Turn Brown in the Winter? Not sure what to put on branch after cutting. http://www.ipm.msu.edu/insects/american_plum_borerhttp://www.ipm.msu.edu/insects/lesser_peachtree_borerhttp://www.ipm.msu.edu/diseases/bacterial_canker_blossom_blastMy guess it is bacterial canker and you should compare the pictures in the link with you tree.The big wound on the south side of the tree is called Southwest injury and results when very cold weather and sunny skies in the winter cause the bark to warm up and cool down during the day and get very cold at night. After a chilly winter night, the south- and east-facing sides of a cherry tree may split as the morning sun causes the bark to warm, expand and break. Problems With Tree Bark Separating From a Cherry Tree Frost Damage. Pruning away heavily cankered branches and taking extra pains to provide the right cultural care can help to stop the disease. There is a dead branch I will cut back also. With proper cultural care, cherry trees can often heal themselves with minimal scarring. You can wrap the tree with plastic, paper or cardboard to keep it warm while it heals. I attach a picture of a dead tart cherry tree with extensive White Bracket fungus.I would suggest painting the wounds and exposed wood with INTERIOR latex paint. If a gummy substance or darkened crust occurs along with cracks in the bark, the cherry may be infected with a fungal disease called canker. You can see from your picture that the bark on either side of the wound is growing to cover the wound and that is a good sign. The peeling bark in your middle photo looks normal and caused by growth of the trunk below.The white rot in the last photo is a wood rooting fungi that has gotten into the wood of the tree and is now spreading inside the tree and producing the fruit bodies (mushrooms) on the exterior of the tree. Paperbark cherry is best known for its stunning bark―the dark coppery peeling bark is actually a plastic film, and it works quite well for winter interest. Still, if you have room in your yard for this showy little beauty, think about giving it a chance. Even enough cherries for a pie. This can kill the bark. We had severely cold winters in 2014 and 2015 which damaged many trees especially those in poor health. Michelle Wishhart is a writer based in Portland, Ore. She has been writing professionally since 2005, starting with her position as a staff arts writer for City on a Hill Press, an alternative weekly newspaper in Santa Cruz, Calif. An avid gardener, Wishhart worked as a Wholesale Nursery Grower at Encinal Nursery for two years. Take care not to injure the trunk of the tree while pruning, weed whacking or mowing, as open wounds invite fungal diseases such as canker. Plant cherry trees in early spring so they have plenty of time to develop a strong, healthy root system before winter set in. Healthy, stress-free cherry trees are far less likely to succumb to problems such as splitting bark than trees that are poorly taken care of. Thank you for visiting Cherry Tree Pictures, please come back soon for more great tree … What Keeps Tree Bark From Getting a Fungus? The white rot in the last photo is a wood rooting fungi that has gotten into the wood of the tree and is now spreading inside the tree and producing the fruit bodies (mushrooms) on the exterior of the tree. The bark splits and the wood of the interior is exposed. My grafted (4types of cherries) is peeling on the south side and I've noticed amber colored sap between branches. There were also an abundance of tart cherries, though few of the other types. Unfortunately, it isn't planted that often because it is highly susceptible to borers and diseases, making it a short-lived tree. Thank you very much for your advise. I see this fungus on many trees not just cherries it is called White bracket fungi (Irpex lacteus) This fungus is living on the wood and dead tissues of the tree.The trunk will become brittle and easily broken as the wood inside the tree is weakened. Glyphosate herbicides contain a wetting agent that can cause permanent damage in thin-barked trees, such as cherry trees, especially when the trees are young.