Leonardo Urena, of Napa, grew a 1,704-pound pumpkin, festival spokesman Tim Beeman said.
Urena will receive a $6-per-pound prize for his pumpkin, totaling $10,224 in prize money, plus a $1,000 prize for having grown the heaviest pumpkin in the state of California, Beeman said.
The giant pumpkin will be on display with the four other heaviest pumpkins this weekend at the 41st annual Half Moon Bay Art and Pumpkin Festival.