I am researching low growing perennials to plant as strips/paths in one of my fields in order to nurse beneficial microbes throughout the year. Doing so is an investment in time and resources, so I would like to avoid planting perennials that are too eager to spread from their strips into my annual rows. It's a fine balance of these qualities: competes against weeds but doesn't spread into adjacent beds, withstands foot traffic/occasional tractor tire traffic, thrives in full sun/part shade, etc. I live in the mountains of NC, a climate closer to the Northeast than the South (zone 6b). Elaine Ingham's list of low growing perennial crops includes some I would be wary of establishing so close to my annuals. Anyone able to shed any light on this?
