Squashes generally refer to four species of the genus Cucurbita native to Mexico and Central America, also called marrows depending on variety or the nationality of the speaker. In North America, squash is loosely grouped into summer squash or winter squash, as well as autumn squash depending on whether they are harvested as immature vegetables or mature vegetables. Gourds are from the same family as squashes. Well known types of squash include the pumpkin and zucchini. Giant squash are derived from Cucurbita maxima and are routinely grown to weights nearing those of giant pumpkins.