My plum tree did not produce any fruit last year and hardly any leaves. It now has a white fungus growing up the trunk and on lower branches. Can I save it as 2015 and 2016 saw good crops of plums (Dark purple/red)
Certified GKH Gardening Expert
I would suggest applying wettable sulfur, and dolomitic lime to the soil. Often, reconditioning the soil will help the tree fight off any infection. The wettable sulfur is a good fungicide as well, so it will help kill of the infection in the soil.
Here is an article for more information on the care of plums: https://www.gardeningknowhow.com/edible/fruits/plum/growing-plum-trees.htm