Urtica dioica (Stinging Nettle) while it grows over much of the world, It grows in abundance in the Pacific Northwest, especially in places where annual rainfall is high. Found in large patches where much of the vegetation is evergreen and resembling a mint plant. A couple of hand fulls may easily be harvested and may appear to be the best choice in the area.
The leaves and stems are very hairy with nonstinging hairs, and in most subspecies, also bear many stinging hairs (trichomes), whose tips come off when touched, transforming the hair into a needle that can inject several chemicals: acetylcholine, histamine, 5-HT (serotonin), moroidin, leukotrienes, and possibly formic acid. This mixture of chemical compounds causes a painful sting or paresthesia from which the species derives one of its common names, stinging nettle, as well as the colloquial names burn nettle, burn weed, and burn hazel.
While not as devastating as some other plants it will be unpleasant for several hours
Their leaves and stems are covered with long, fine to bristly hairs that can irritate and blister skin when handled. When human skin comes into contact with a leaf or stem, it often rapidly develops reddish patches accompanied by itching and burning. Frequently, a prolonged tingling sensation may persist on the affected skin for more than 12 hours, even after visible symptoms have faded.