Outsidepride Dianthus Heddewigii Flower Plant Seeds - 500 Seeds Dianthus Heddewigii is a beautiful black and white annual flower growing in USDA Zones 4 - 8. This amazing plant grows to approximately 14 inches. Also known as Japanese Pinks, this elegant, bushy, uniform plant, produces blue-green foliage, with large double flowers, fringed. This is one of the most attractive of the Dianthus flowers available in the marketplace. Somewhat hardy but best treated as an annual in most areas of the U.S. Sow 4 to 5 seeds per container, basket, or for every plant you want in your flower garden.