Stinging Nettle Seeds (~200) by All Good Things Organic Seeds: Certified Organic, Non-GMO, Heirloom, Open Pollinated Seeds from the United States Packet: ~200 seeds (0.05 gram) Seeds are certified organic by Oregon Tilth: certificate number OT-017423. Non-GMO, Heirloom Variety. 120 days from seed to establish a stand with harvest potential. Perennial. Grows Best From Late Spring to Early Fall In Most Climates Our company is located in Ojai, California, United States. Plant Good Seed. Know the Source.