how to kill unwanted shrub and vine roots
We have a home in England and my husband has been composting for years, making the soil very fertile.....but we're now trying to get rid of old rambling vine and shrub roots that are down deep. We're gone from this home most of the year and when we return it is a jungle. We've got to find a way to kill this old roots, hopefully organically.
Can someone help us with this?
Notes: lots of rain, not much sun in England