What is wrong with my Okame Flowering Cherry Tree
I planted this 1 year ago on Mothers Day 2015. It had a rough summer, attacked by June Bugs but we saved it and it limped along. The leaves fell early but the tree branches were not dead. In March it was all budded out and I was so excited. Lawn and Shrub service sprayed it with 1st Spring service. I don't recall what they sprayed but I looked it all up and labels indicated safe although I was not happy they sprayed the tree and all the new budding flowers. All the flowers and new leaves sprayed fell off. There is new growth on only one side of the tree and it is sparse and slow to develop. Any ideas and advice is appreciated. The tree has sentimental value.
It is impossible to determine exactly what is wrong with the tree based on the description and pictures, but there is likely more than one issue contributing to the tree's poor growth.
The ideal planting time for trees is in the fall, so as you've already noted, the tree didn't get the best start and struggled to survive a hot, Georgia summer.
Unfortunately, I cannot speak to any damage that may have occurred due to the spray, since I do not know what product was applied. You will just have to wait and see how the tree does through the summer. New growth on only on one side of the could indicate that there is a problem with the root system on the other side of the tree, but I cannot say for sure without seeing it.
The following publication will provide you with more details on caring for newly planted trees: http://www.clemson.edu/extension/natural_resources/leaflets/fl17.html. Also, do not apply any type of "weed and feed" products or herbicides near the tree. They can be taken up by the root system and may damage the tree.
I recommend taking a soil sample to determine fertilization and liming requirements: http://extension.uga.edu/publications/detail.cfm?number=C896
Also, confirm that the tree was planted at the appropriate depth: http://www.clemson.edu/extension/hgic/plants/landscape/trees/hgic1001.html