Brown spots on plum tree
I have a Satsayama (spelling?) plum tree and it has developed brown spots on the leaves - mostly on the tips. Does anyone have any idea what it could be? I wonder if it is the chlorine in the water or maybe the soil? What do you suppose I could do for the tree? I will really appreciate some information. The tree was a 5 gallon that I planted in May. It was doing really well until recently.