Just Say No to Abuse Declaring War on Terrorism. Some are monocarpic, which means they die after blooming. To prevent these types from dying, simply remove all flowering shoots as they appear. Different species bloom during different seasons.
Flowers are pyramidal and are produced in racemes in shades of yellow, white or pink.
All are easily propagated by either stem cuttings or by rooting the offsets. Replanting these cuttings will produce vigorous, but uniformly dwarfer plants. Most are hardy from Zones 9 through 11. Fahrenheit, moreso when kept dry. Floridians living in the Panhandle can succesfully overwinter cuttings indoors or grow a few of the hardier types in a protected area.