Rowan tree dropping leaves now?
Hello - my first post, I hope someone can help. We moved into our house nearly two years ago. It has a beautiful tree, which I think is a rowan (though very happy to be corrected!), in the garden. Last year it was stunning; this spring it has been dropping leaves at an incredible rate. They are yellowy brown with marks on. There is also new leaf growth and blossom, so I'm hoping it's nothing deadly, but I'm a very novice gardener and don't know whether it might be something that can be treated.
We have had a lot of building work done and a building placed near the tree, so part of me wonders if a large root has been damaged. Could that cause this reaction?
Thanks for any help.