The stinging nettle is one of my favourites.
Sweden is a country where you can find quite a lot of good food out in the wild. Locally produced, organic (at least if you don’t pick it along a highway or in a roundabout) and totally free.
Still waiting for the summer’s explosion of fruit and berries, I have spent all spring stuffing myself with nettles. It’s really unbelievable how many good things they contain.