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.
Plant evergreen ornamental varieties for year-round specimen plants. Grasses include blue oat grass (Helictotrichon sempervirens) and tall blue fescue (Festuca amethystine). Blue oat grass is a semi-evergreen fountain grass. It grows well in zones 4 through 9 and needs dry, well-drained soil.
Types of Barberry Shrubs. Barberry shrubs are excellent hardy landscape plants that thrive with minimal care and maintenance. They come in many shapes, sizes and colors and can be evergreen (foliage all year) or deciduous (leaves drop in winter). The three main types of barberry shrub are red-leaved, gold-leaved and green-leaved (evergreen).