In my previous 2 homes i grew some fantastic veg. I do not claim to be an expert but learning all the time. My latest garden i am having real trouble getting anything to grow in the ground. Everything starts OK then stops. Very dry and dusty in summer so i am thinking of completely changing the soil. A big problem i have also is half a spade down there is a mat of roots from a nearby climber. Its everywhere, and once i have pushed the spade down, just cannot lever the soil out because of the roots. I have been thinking of digging say, 18" down, putting down a DPM and then filling back in with new soil, compost etc. Is this extreme? I was thinking of seiving half the soil to get the roots out but im guessing any little bits i miss will carry on growing. I have a cheapish supply of good topsoil and compost so thats not a problem. Anyone?