Pumpkin

Pumpkin is a material added in the 1.2.1 Halloween update. It is harvested from the Pumpkin plant (similarly to harvesting Cactus) which is available year-round from Pumpkin Seeds bought from Dryad and will grow naturally in random places during the Halloween season, it can only be planted on grass. Harvesting pumpkins will rarely yield a Magical Pumpkin Seed, which is used to summon the Squashling pet. They need 2 blocks width and 2 blocks height of clear space to grow.