Start seeds inside 4/15-5/15. Sow seeds 1/8" deep. Cover with a dome or keep well misted or bottom watered. Days to germination: 14. Nettle plants have tiny stinging hairs SO ONLY HANDLE LIVE/FRESH PLANTS WITH GLOVES ON! Transplant outside 5/15-6/15 spaced 12" apart. Or, direct sow seeds outside in spring in an area where you won't accidentally brush up against them (they have tiny hairs that sting!).
NETTLE PLANTS HAVE TINY STINGING HAIRS SO ONLY HANDLE LIVE/FRESH PLANTS WITH GLOVES ON! The stinging hairs disappear after drying or cooking. Harvest shoots and tops in the spring. Use fresh or dried.
