Revised! Circular 527, a 3-page illustrated fact sheet by B. Tjia, R.J. Black, and Sydney Park Brown, describes these members of the sunflower family that are popular for Florida gardens and make long-lasting cut flowers — flower colors and forms, planting and care, seeds, division, pests and diseases. Published by the UF Department of Environmental Horticulture, November 2008.
http://edis.ifas.ufl.edu/MG034