JC now I would use something to shade it for a few days - I have all these pieces of slate so I use those, but anything for some protection - in this way it has a better chance of surviving!
You should take a picture so we can see what you did! Once you get growth on the stem near the cut, you will be very excited!!
Marilyn - I totally agree with what Bev said - you just haven't found the right semp combo or spot yet! But with your trees trimmed that may give you a better chance now!