[inishindie]

I have a project to remove invasive self set cotoneaster from a driveway. The seeds were probably dropped by birds and over about five years they have set themselves between the house wall and the driveway. These shrubs are maturing fast and the thick stems are undermining both the concrete wall and the driveway. pushing them out and up.

I can chop the tops of the shrubs off but can;t easily get access to the roots. Will I need to dig the driveway up to remove the roots or could I put something on them to kill them off?

I also realist that there could be problems by killing the roots that when they die off there might be hollows left underground that could also cause subsidence, albeit slight.

Any recommendations for the best course of action please?

[kindredspirit]

Brushwood killer would surely do the job.

Dunno about subsidence. Maybe everything will return to their respective original positions?

[Dr. Sunny Thomson]

[inishindie]

I'm at peace with the world today so the teeth aren't gnashing at the thought of using brushwood killer. I'd prefer to find a non chemical option though....

Digging up the roots after the tops have been cut back would be the only other option I can see but they are well established and it will mean having to re concrete some of the driveway and getting as much out from under the foundations as possible.

I'll take the easy option and ask the customer and if they say brushwood killer I won;t jump down their throat......