Celosia argentea plumosa Named after sylphs, the invisible air beings from the 16th-century writings of philosopher and alchemist Paracelsus, this celosia is bright and airy with chartreuse to lime green, feathery plumes sitting atop long, straight stems. This sun-loving summer annual is perfect for the flower garden and fresh cut bouquets. Prefers moist, well-drained soil. Flowers prolifically all season. Germination code: (1) and (6)