Hello,
Our cherry tree has no leaves or fruit this year. The Apple tree next to it has very few leaves on it. Some are curling, brown and very few healthy leaves on bottom of tree. We have an espalier of three apple trees after the cherry tree. The cherry tree had flat type mushrooms on trunk this spring. The second Apple tree is better and the third is the best in terms of leaves. It does not look like any will produce fruit and we had many last year. We are in zone 3 (manitoba)and soil is more clay. The buds on cherry tree are brown. All trees are about 8 years old and have done fine until now. They are in sunny location and get as much water as garden. Thank you.
Unfortunately, fungus or mushrooms on or around your cherry tree often indicate fungal infection which can lead to root and crown rot. Stone fruit trees such as cherry trees are venerable to infection by a variety of fungi which can spread to other trees. Root and crown rot diseases result from a fungus-like organism that is present in most soils. It only infects the tree if the moisture level of the soil is very high, like when the tree grows in standing water.
Symptoms of rot diseases include slowed growth, discolored leaves that wilt quickly in hot weather, dieback and sudden plant death as well as buds turning brown. This is one of the worst cherry tree diseases. Once a cherry tree has a rot disease, there is no cure. However, rot diseases of cherry trees can generally be prevented by making sure the soil drains well and regulating irrigation.
You may be able to save the tree with careful pruning of debris, and applying an approved fungicidal spray but your best defense is probably to remove the tree before it spreads any further. For more in depth information here are some websites:
https://homeguides.sfgate.com/cherry-tree-mushrooms-fungus-33034.html
https://www.gardeningknowhow.com/edible/fruits/cherry/cherry-tree-diseases.htm
https://www.gardenguides.com/68752-diseases-flowering-cherry-tree.html