I once watched this program about a guy that grew it in an area for wood harvesting and food, and kept it in check by digging a 1 meter deep trench around the a

I once watched this program about a guy that grew it in an area for wood harvesting and food, and kept it in check by digging a 1 meter deep trench around the area. The trench light pruned the root system from reaching his property. I thought it was pretty clever.