Both yellow squash and zucchini are packed with vitamins and beneficial nutrients. Yellow squash is a power veggie boasting vitamins A, B6, and C, folate, magnesium, fiber, riboflavin, phosphorus, and potassium — whew!u003cbr/u003eu003cbr/u003eZucchini is full of vitamins C and A, potassium, folate, and fiber — all good for a healthy heart, reducing high blood pressure, and lowering cholesterol.