With small flowers clustered into a rounded form, ixora (Ixora coccinea)may remind you of hydrangea (Hydrangea), but with more dense stems and a smaller, more compact shape. Its evergreen habit and year-round flowering season make an ixora plant well worth growing, either in your garden or in a container on your patio. Also called flame-of-the-woods, ixora grows in U.S. Department of Agriculture plant hardiness zones 9 through 11, but it can overwinter indoors if you live where winters are frigid.