Beginner Gardening: Mini Royal Cherry, 4 by waterwise999

waterwise999 wrote:
Hi, this is my first tree but it had some problems with it so I appreciate if I can get any helps. I have been looking for answer for a more than a month now but couldn't solve it.

This is a low-chill Mini Royal Cherry I planted in late February this year in San Francisco where temperature is very mild. There is no rainfall from May to October. Last month I noticed that the tree stopped growing and I spotted that the most new shoots were wilted (see picture). There are multiple brown spots on some leaves. The closest problem I found was Cherry Leaf Spot but its symptom doesn't not include wilted shoots. What I'm afraid the most is Verticillium Wilt. I started spraying baking soda yesterday as you can see the white spots on leaves. What should I do?

Thanks in advance for any helps.