How can we stop evergreen trees growing much taller? They are very close to our house. They are about 30 years old and were never trimmed as they grew. I think they are Leylandi. We dont want to chop them down but they are getting out of hand. Can you help.
You might be better to think about removal … it will cost less now than each passing year as they get bigger.
This tree cannot be satisfactorily kept to a small size.