|“||Crafting Material. Can be gained through Gardening.||”|
— Item Tooltip
Pumpkins are used as a crafting material at the Shadowy Station. They can drop from completed Pumpkin Lairs during 2014's Shadow's Eve event, or can be grown through Gardening during the Autumn season. In 2015's Shadow's Eve, pumpkins dropped from Shadow's Eve Adventure Chests.
Pumpkin lairs are back, maybe not the same, but they are back in peaceful hills biome just like sunlight bulb lairs.