- You Will Get 500 Seeds Of Catchfly Nodding Catchfly Triumph Silene Pendula Flower Seeds. - Sunlight: Partial Shade. - This is for 500 seeds the nodding catchfly these are a annual they get to be about 8" tall and do great in zones 4-8 they bloom late spring and into summer. - These like to be in full sun to part shade these flowers are a pinkish color it will spread about 12" and makes it great for boarders and around rock walls.