All Good Things Organic Seeds Crookneck Summer Squash Seeds (~40): Certified Organic, Non-GMO, Heirloom, Open Pollinated Seeds from the United States Packet: ~40 seeds (3 grams) Certified organic by Oregon Tilth: OT-017423. Non-GMO, Heirloom Variety Start from Late Spring to Early Summer In Most Climates A Quality Variety with Vigorous Yield Potential Located in Ojai, California, United States. Plant Good Seed. Know the Source.