There is much confusion with regard to the use of the words "pumpkin" and "squash". The words have been used indiscriminately by growers, consumers and the seed industry. These words refer to culinary traits rather than taxonomic classifications. Squash is usually divided into two categories: "Summer squash" and "Winter squash".
When pumpkin or squash is grown for confectionary seed, the seed processor determines the variety to be used. The most commonly used is 'Golden Delicious' squash and proprietary selections of that type. Plant spacings are reduced and plant populations are increased to produce more seed per acre. Fruit size becomes a secondary concern.