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.
Evergreen ferns, such as Christmas fern (Polystichum acrostichoides) and Boston fern (Nephrolepis exaltata), are among the most popular flower arrangement foliage, commonly used as filler in large, mass arrangements or to accent a single stem arrangement.lmost any shrub in your garden works well as foliage for a flower arrangement, providing that the shape of the foliage complements the shape and size of the flowers used.