Go big or gourd home: giant pumpkins and how to grow them

If you've seen the giant pumpkin at this year's Topsfield Fair, you've seen one of the largest pumpkins ever grown in the United States. The 2,480 pound behemoth has us wondering, how does someone go about growing such a gargantuan gourd? We talk with a pumpkin grower who won the Topsfield weigh-off in 2012. He sells seeds for giant pumpkins through Wallace Organic Wonders. Then, we'll talk about carving pumpkins, gigantic and otherwise, with a master pumpkin carver.