Q.weird growth on citrus lemon tree, mandarin tree and grapevines
Where use to have growth of branches and leaves and flowers. Now the lemon tree, mandarin and the grape vine are making some kind of growth that is not natural. It does not mature. Normal wise should get a new branch but now the growth is just like a mushroom on the branch/vine with new leaves never developing.
Certified GKH Gardening Expert
Apparently, your trees have a type of disease. This article may help: http://www.ipm.ucdavis.edu/PMG/C107/m107bptrunkrootdis.html
It may be a good idea to discuss the issue with your local Cooperative Extension office. See this article: https://www.gardeningknowhow.com/extension-search/