A pumpkin is a squash fruit, usually orange in colour when ripe. Pumpkins grow as a gourd from a trailing vine of the genus Cucurbita Cucurbitaceae.The pumpkin varies greatly in form, being sometimes nearly globular, but more generally oblong or ovoid in shape. The rind is smooth and variable in colour. Pumpkins are a popular food, with their insides commonly eaten cooked and served in dishes such as pumpkin pie; the seeds can be roasted as a snack.