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.
Types of Arborvitae Shrubs. Don't try eeny, meeny, miney, moe when it comes to picking arborvitae shrubs for your garden, or you may end up with a wall of dense, green foliage blocking your ocean view. These conifers in the cypress family come in sizes ranging from dwarf to giant. All offer gorgeous needles in delicate snowflake patterns.