Rosette Delizzy
 This can be a large plant in some areas, approximately 6x6'.  It blooms in flushes all season and has good disease resistance.  The blooms can be small in dry weather and much bigger with adequate water.  The colors are often yellow with a thin margin of red, but in fall the whole bloom can be brilliant.  It can have some fragrance.  Bred by Nabonnand in 1922, hardy only from zone 7.