|Is Stackable||Yes (40)|
|Is Fluid Blocker||No|
Description (From Recipaedia)
Pumpkins are large, orange vegetables that grow in groups of 5 to 10 plants. When collected they can be eaten or crafted into jack O'Lanterns.
Unripe pumpkins have 6 stages before they become ripe orange pumpkins. On each stage, the pumpkin grows larger until it turns into a fully-grown orange pumpkin.
Not all pumpkins will grow to maturity. Approximately 1/3 will stop growing at some stage of development. You can tell they have stopped growing when the vines disappear.
You cannot eat them when they're unripe but Boars, Bears, Ostriches, and Cassowaries will eat these if dropped or thrown on the ground or while trying to break one loose. So they can be used to attract or feed these animals. You can lure these animals into a trap or a farm by throwing the Pumpkins ahead of you then take the pumpkin back and repeat the process over and over again.
In Creative mode the inventory only lists 3 stages but when placed in inventory or a chest, the unripe stages take up 6 slots and can only be stacked in the appropriate one.
In the 1.29 updates, you can use the seemingly useless Unripe Pumpkins as ammo to shoot at animals to protect your base or such. This will attract Bears or Ostriches or such to your base.