Scott Stiller wrote:Thanks for your help Ben. Will it self seed and take over an area if left alone?
Here in zone 6 Pennsylvania, a lot of the embankments along highways are covered in hairy vetch every summer. I can't imagine the highway department is seeding all those miles every year, so it must be self seeding. In my own garden, I prepped the area with a mixed cover crop back in 2003/2004, including hairy vetch. It's planted as a small forest garden now, and every year I get some vetch plants showing up. Only once was it a nuisance where I felt the need to manage it (just tearing a lot of it out), because it was smothering other plants and climbing into fruit trees.