Mountain Ash looks unhealthy

[Andrew1976]

Hello.

 

I have a Mountain Ash tree (I think) growing out of my patio. It has for the last couple of years seemed to have less foliage than before and some of the leaves show brown edges. I have had to cut off a number of smaller dead branches. It is a bit better this year but overall doesn’t look very healthy especially on one side. I have also noticed a few points where the bark seems to be missing but only small patches. 

 

If anyone has any insights or advice it would be appreciated. It has been there for a long time so I would rather keep it! 
 

Thank you. 

[tree-fancier123]

we are near the end of the growing season now, so you may not see any recovery till next year, but those slabs over much of the root plate, cimbined with this being a drought year have not helped it.

Without disturbing the slabs, a few watering cans around the exposed side twice a week during dry periods may help it, or a hose if no ban. Ideally you dont have paving (unless porous) directly under the canopy