Squash, Early Prolific Straightneck Squash Seed, Organic, NON-GMO, 25 Seeds per Package. The Early Prolific Straightneck is a yellow, straight-necked type. This versatile vegetable is delicious grilled, steamed, boiled, Sauted, fried, or used in breads. Squash serves as a good source of vitamin C Squash contains 18 calories per cup this low-calorie vegetable is an ideal side dish if you wish to lose weight. An excellent producing plant.