Dying Oak.

[Mick Stockbridge]

I've been deadwooding it today but tbh I think is on it's last legs due to the concrete that was laid three years ago.

 

Without removing the concrete can anything be done to save it?

[Shane]

Is that a waterproof membrane under the shingle?

Maybe remove that lot and replace with well treated border for plants.

What is the next door garden like below the tree.

[Dean Lofthouse]

You can guarantee they cut through many roots, digging down and then over open wounds laid a highly alkaline material for the Tree to absorb

[BenR]

Sugar drenching regularly might be a temporary solution to allow the plant the energy it needs while new roots develop? Don't know how well it works but it was mentioned to me by Glynn Percival in one of his lectures. I think the idea is that by giving the tree plenty of the sugars it needs for energy, the tree will focus more on developing its roots and puts less energy into producing sugar in the leaves? Might be worth a try...