roots of a Birch utilis ‘Jacquemontii’

Questionsroots of a Birch utilis ‘Jacquemontii’
Thomas Lenehan Staff asked 14 years ago

We have a “Jacquemontii” planted approx. 16 foot from the back of our house. It is planted in a raised bed 4 foot from a boundary wall. The raised brick bed (6 inches in height) is underpinned by a small retaining wall ( 3 inches in height) which has been cracked by one of the tree’s roots (8 inches below ground surface). This root is 3 inches in diameter and since it has split the wall it is lifting it up off the ground.1. Can I sever this root to stop it doing more damage? 2. If so will it kill the tree? 3. Is this type of tree too near the house and likely to do more damage?