Avoid highly trafficked areas, such as along highways, industrial areas, along railroad tracks as they often control weeds by spraying. Be careful not to gather where pesticides or chemical contaminants are used such as along railroad tracks or close to fields or yards that are sprayed with herbicides or pesticides. I tend to avoid along sidewalks or walking paths where dogs are commonly walked. You can guess why. Some favorite places include - Waste areas along the Cannon River - Along the edges of the compost site - lots of weed seeds sprout there! - Sechler Park - no one seems to mind someone gathering stinging nettles there for some reason! Lots of nice plantain there, too. - Edges of city parks where there isn't much foot traffic. Do you have some location tips to share here, too?