C. caerulea is an upright perennial with clumps of grass like foliage and blue, yellow or white ray floret flowers with toothed petals and papery white bracts in summer and autumn.
Incorporate fertilizer into the soil when preparing beds for new plants. Established plants should be fed in early spring, then again halfway through the growing season. Avoid applying fertilizer late in the growing season. This stimulates new growth that can be easily damaged by early frosts.