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.
Excellent evergreen trees for landscape - good survival rate ; These evergreen trees require cool, sheltered moist location, well-drained soil; Restrictions limited as far as soil types and conditions; These evergreen trees are found in northern areas - from sea level to 6,000' The needles on these evergreen trees are 1/2 to 1 1/4 long - very fragrant, good color; These evergreen trees grow symmetrical and dense with a pyramidal crown ; These evergreen trees make excellent ornamental, Christmas tree or timber; Will not do well in heavy, wet clay soil