Squash and pumpkins are closely related, and among the squash family are butternut squash and winter squash — both equally delicious. The two basic types of cultivars of pumpkins are the kind we carve for jack-o-lanterns and those we make into pies. Both pumpkins and squash were one of the food staples for early Native Americans. According to Cornell University, consistent moisture is necessary until emerging plants have established roots and vines begin to grow. Avoid overhead irrigation to keep leaves and vines dry by using drip irrigation or a soaker hose.