Hi @claire-bevan
Thanks for your question about your dying or dead parts of the paper bark Acer (Acer griseum).
I would always advise that you try and save an ill or sick tree rather than removing it. This is because digging it up is costly, time intensive and often leaves a void whilst another tree plays catch up.
Trees have dead branches from time to time where frost or adverse weather kills them off, but without killing the entire tree. Some older branches die back naturally too so it's not always a sign of ill health with trees and plants.
Looking at your pictures I'd prune out all the dead branches back to the next healthy lateral (side branch) or main trunk. I think it may even make the tree a nicer shape looking at it.
Use clean sharp secateurs and a wood saw. See below for a picture of what a tree pruning saw looks like along with a link to the ones I use. (This is an affiliate link so if you do choose to buy receive a small commission that helps keep this blog free to use!)

Use a wood saw for thicker branches always cutting from the bottom first for 1/3 of the branch then flip and cut from the top down. You can see this technique in my tree crown lifting video below.
https://youtu.be/OsQnwBnf7No
For thinner branches like the thickness of a pencil then secateurs (like these amazing ones) are best. Keep them clean and sharp in between uses.
https://youtu.be/zsdpzrxxOj8
Hope that helps.
Lee
Hi @claire-bevan
Thanks for your question about your dying or dead parts of the paper bark Acer (Acer griseum).
I would always advise that you try and save an ill or sick tree rather than removing it. This is because digging it up is costly, time intensive and often leaves a void whilst another tree plays catch up.
Trees have dead branches from time to time where frost or adverse weather kills them off, but without killing the entire tree. Some older branches die back naturally too so it's not always a sign of ill health with trees and plants.
Looking at your pictures I'd prune out all the dead branches back to the next healthy lateral (side branch) or main trunk. I think it may even make the tree a nicer shape looking at it.
Use clean sharp secateurs and a wood saw. See below for a picture of what a tree pruning saw looks like along with a link to the ones I use. (This is an affiliate link so if you do choose to buy receive a small commission that helps keep this blog free to use!)

Use a wood saw for thicker branches always cutting from the bottom first for 1/3 of the branch then flip and cut from the top down. You can see this technique in my tree crown lifting video below.
For thinner branches like the thickness of a pencil then secateurs (like these amazing ones) are best. Keep them clean and sharp in between uses.
Hope that helps.
Lee