return of the Beris
Last year I moved house. In the front garden was a rather unprepossessing berberis.
It was a vicious, sprawling thing of no merit whatever so I cut it down. It's roots were too tough to saw through all of them so I left some of it behind and planted a beautiful mahonia in its place which is doing very nicely and is planted round with bluebells and lily of the valley.
Yesterday I was horrified to see new shoots of the berberis coming through the soil.
What can I do prevent further growth?