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 leaves of deciduous shrubs change colors in the fall season before falling. The bare shrubs add a different type of interest to the landscape during the winter months. In the spring, new leaves form to add color, shape and texture to the garden. St. John's wort (Hypericum kalmianum), serviceberry (Amelanchier spp.) and Kelsey dogwood (Cornus sericea) are a few types of deciduous shrubs.