My garden is surrounded by a field where it's impossible to keep weed seeds out. I was wondering if I put in raised beds and then used gravel and salt in the paths would that salt leach up into beds? If so could I maybe put pond liner at the bottom of the raised beds with sand and drainage holes?
Is there any other way to keep weeds in paths down that's more long lasting? I could spray a bunch of roundup 365 but it'd be expensive and I'd have to reapply every year
