Chinese elm - slow growth

[BonPiotr]

You really shouldnt need to resort to pesticide use at this stage.
Chinese elm is a good beginners tree because it is normally so easy to care for.
You are in danger of killing it with "kindness"!!
You have received some very sound advice already on here so I suggest you leave the poor thing alone to recover and get some more trees to practice on!!

Sure, that is why I asked here first before killing fly with a gun I also have some other trees as i said earlier