Korean firs are beautiful, densely-branched evergreens native to the mountains of Korea. 'Cis' is a dwarf specimen with fresh green needles and a loosely rounded habit. Firs can be distinguished from pines and spruces by the needles, which are flat or ovoid in cross-section and slightly curved; and the cones, which are upright and persist on the tree until the seeds have dropped. Korean fir needles have two narrow white lines beneath. The cones are very showy, turning violet-blue and appearing even on young trees, but not likely on dwarf cultivars. Korean firs may not be easy to grow in areas with clay soil and they don't like excessive heat or air pollution. They require good, organic soil. Under the right conditions, they are beautiful, slow-growing ornamental specimens.