Just started two days ago- our Kwanzan Cherry Tree, planted in May of 2013 (this year) has started getting a bunch of yellow leaves that are falling off. I counted ten yesterday. I was was thinking from lack of water so I did a slow stream from the hose for about 20 minutes. Today I found about 15 more had yellowed and fallen off. Several more are turning yellow. They all have some spotting on them- some more than others. (See attached photo I just took today) Checking various things on-line, and comparing pictures of affected Leaf Drop leaves, it looks like that's what we have. Most of the tree is vibrant and healthy, but selected leaves are turning yellow and dropping very fast. If it is Leaf Spot, I have read nothing much can be done this late in the season (nearly Autumn) and that any treatments should be done in early spring (a fungicide treatment). My question- Will this tree die? It stands about 10 feet high and has been very healthy all Spring and Summer. Can it withstand an attack of Spot Leaf? Or do you think it is something else??? Thanks for ideas.