Related Terms. 1  operating system virtualization. 2  mobile operating system (OS). 3  OS-operating system. 4  server operating system. 5  system. 6  Microsoft Windows XP operating system. 7  Linux OS (Operating System). 8  paravirtualized operating system. 9  NOS-network operating system. 10  Chrome OS.
Prune and shape evergreen shrubs to provide year-round hedges, ground covers and privacy screens in your yard. The scarlet firethorn (Pyracantha coccinea) and Chinese holly (Ilex cornuta) shrubs produce red-colored berries and dark-green leaves.
Plant Types. Tropical hibiscus (Hibiscus rosa-sinensis) are evergreen, or shrubs that keep their leaves all year. On the other hand, hardy hibiscus, members of the genus Hibiscus with more than 200 species, are deciduous. Their leaves die off in winter. They have heights up to 15 feet and widths from 4 to 8 feet.