Boston marrow squash seeds Sweet, carrot-orange flesh, cooks to a creamy, custardy texture for perfect pies, puddings and breads. large, bright orange squashes that can weigh anywhere between 10 and 50 lbs., although 25 lbs. is more common. large, red-orange winter squash known for its sweet, custardy flesh and long storage life.10 Seeds per Package. These will be shipped in a stamped envelope.