30-40 years life span
Table salt kills trees and shrubs. Look at the branches of the tree. However far they spread out, is where the roots are. You would put lots of salt on those areas and water it. Make sure the salt...
Since birch is a hardwood I imagine that silver birch is in that family too.
Silver Birch Trees come from Bruce castle park because all trees grow there.
The only way I know is to apply for a Tree Preservation Order,to your Local Authority.