Why is Halloween full of pumpkins?

"with the bounty of the sun's crops, and the bounty of the moon's yield" (Devorim 33, 14). Says Rashi: "because some produce like cucumber and melon (Pumpkin) get ripe from the light of the moon", and the moon is a big player in Halloween. (By Zevy F) (See Oct 31, 2011)