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.
The different colors and textures of foliage, bark, cones, or berries should also be considered in selecting evergreens. There are silvery blue juniper varieties (trees, shrubs, or ground covers) that are often effective as a contrast to redwood surfaces. Dark green Japanese yew, the female plants bearing red berries in fall and winter, are handsome against many colors of brick.