@localizefood.app: A 13-year-old grew two pumpkins so big it takes real muscle to move them, all from seeds his grandmother gave him for Christmas. He started the seeds indoors in April, then moved them outside on Martha's Vineyard weeks later. He watered each plant one to two gallons a day and added seaweed extract weekly while tracking the growth by hand. By fall the pumpkins topped out around 500 and 300 pounds. Find a farm growing pumpkins near you on Localize before the season ends. Sources: CBS Boston