All Good Things Organic Seeds Rouge d'Hiver Red Romaine Lettuce Seeds (~500): Certified Organic, Non-GMO, Heirloom, Open Pollinated Seeds from the United States Packet: ~500 seeds (0.75 gram) Seeds are certified organic by Oregon Tilth: certificate number OT-017423. Non-GMO, Heirloom Variety. 30 days baby leaf. 60 days head. Annual. Grows From Spring through Fall in Most Climates. * Located in Ojai, California, United States. Plant Good Seed. Know the Source.