What depth of soil needs to be removed against soil sickness in a rose bed?
First you need to specify exactly what type of disease or problem you are having and find out if it is soil borne.Most modern roses are grown on a root stock that is disease resistant The most common problem is a root rot that is caused by planting roses or other plants in a heavy clay soil that does not drain well. If you have this problem you may have elevate your flower bed and mix in some sand or a potting soil to get better drainage. But first write back and tell us exactly what sort of problem you have.
