E.M.
Depending on how badly he sprayed the tree, it may or may not be completly dead. One thing you can do is to scratch te bark with your finger nail to see if it is "green" underneath. Start at the top and work you way down. If you do find any green then the plant should be ok. You may have to cut it back some which will cut off the blooms for next year. It will need a good fertilizing. Depending on where you live, I would talk to the people at Family Tree Nursery. They have 3 stores, one in Liberty, Mo ###-###-#### speak to Jim Gardner, one in OP, KS ###-###-#### Speak to Shane Snow or Doug Seip, and one in Shawnee, Ks ###-###-#### speak to Ken Wood. They are the best at what they do. I worked for this company for 8 years before I deceded to become a SAHM. Good luck to you tree! E.