Imperial Star Artichoke Seeds (~25) by All Good Things Organic Seeds: Certified Organic, Non-GMO, Heirloom, Open Pollinated Seeds from the United States Packet: ~25 seeds (1 gram) Seeds are certified organic by Oregon Tilth: certificate number OT-017423. Non-GMO, Heirloom Variety. 120 days from seed. Perennial, but this variety performs especially well during its first year. Grows From Spring through Fall In Most Climates Our company is located in Ojai, California, United States. Plant Good Seed. Know the Source.