115+ Days to maturity. Non-GMO Competition Pumpkin 400 lb. Plus pumpkin seeds from True Leaf Market come from competition pumpkins that weighed 400 lbs. or more. Whether you want to enter local competitions or simply start an impressive pumpkin patch for the fall, these giant pumpkin seeds start with good genetics from locally grown pumpkins to help you grow large, orange fruit. Directly sow competition pumpkin seeds in hills or start the seeds indoors 2 to 3 weeks before your last spring frost date. Packet contains 7 seeds.