Sourcing Topsoil w/o Problematic Hitchhikers
Hi all,
For most of my gardens so far, we've had locally quarried sand brought in for fill and I've used my native soil as the topsoil component. This means that I've had minimal invasive plants and animals come to the property, which is important to me. I live on a waterfront lot that so far does not have earthworms, garlic mustard, Japanese knotweed, phragmites, etc etc.
How do I source topsoil that haven't got the baddies in it? I'd prefer bulk, but when I ask the provenance of the soil I get shoulder shrugs. Is bagged stuff safer (if more wasteful)?
Thanks!