Giant Crego Mixed Aster Seeds. Also known as Ostrich Feathers because of the loose, gracefully curled arrangement of the petals. Fragrant, immense double flowers averaging 10-15 cm (4-6″) in size are perched on top of sturdy 60 cm (2′) high stems. Colours include white, pink, crimson, salmon-rose, blue and purple. A reliable old favourite that is not invasive. A superb cut flower that can be used beds, borders or containers in sites with full sun to partial shade.