Perennial. Keep moist to germinate. Plant in autumn for best spring germination. Never touch without heavy gloves on, because this plant has stinging barbs. Leaves are a natural antihistamine and harvested for use in tea. Free shipping on orders over $34. 100% natural, chemical-free seeds. 50 seeds per pack. Botanical name: Urtica dioica. Every seed we sell is certified by us to be chemical-free, non-GMO and heirloom.