Stings from stinging nettle can cause pins and needles (paresthesia) and hives (urticaria), despite that it's one of my favorite edible plants! So much so that I grow it in our garden as well! Nettles have opposite leaves that are serrated and progress from rounded to lanceolate as the plant matures. Those leaf stems have a small groove running down their petiole, and a decoration at the leaf node. The entire plant is covered in tiny stinging hairs (trichomes), with a concentration of them on th