
Thinking of stinging nettles (Urtica dioica) may bring to mind childhood memories of legs burning as you whizzed down country lanes on your bike. Or itchy white bumps blooming on your hands and even face as you foraged blackberries from the hedgerow.
As an adult, you may have fresher memories of the pain from trying to weed persistent nettles from your garden. As soon as you think you’ve got them all, they spring up again like difficult relatives at Christmas.