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.
Tall upright junipers make good windbreaks, large hedges and striking accents in the landscape. Hetzii Columnaris (Juniperus chinensis Hetzii Columnaris) is a vigorously growing juniper, reaching 10 to 15 feet tall and 5 feet wide at maturity.heir foliage can be dark green, light green, silver-blue or have golden hues. The types of juniper shrubs include low, ground-hugging forms, medium-sized shrubs and large, pyramidal forms. Use low-growing junipers as evergreen ground covers and medium or large shrubs as hedges, screens, windbreaks and specimen plants.