If a Gibson is your cocktail of choice, then make Crystal White Wax Onion the choice for your garden! The Crystal White Wax Onions are perfect for pickling, and they also taste delicious in stews and soups. Crystal White Wax Onion Seeds will produce small white pearl onions that should be picked when they are 1 to 1.5 inches in diameter. Crystal White Wax Onions are a short-day variety, and as such thrive in southern regions.