Picea omorika 'Nana' / dwarf Serbian spruce
Picea omorika 'Nana' is a popular, widely planted selection of Serbian spruce — a fine addition to the home landscape. Young plants will have a uniform, somewhat globose growth habit. Over time, as the plants mature, they will become densely conical. Branching is dense and uniform; foliage is stunning silvery blue-green in color, an effect created by white stomatal lines on the lower leaf surfaces with the top being dark green.
After 10 years of growth, a mature specimen will measure 2.5 feet (75 cm) tall and 2 feet (60 cm) wide, an annual growth rate of 3 to 4 inches (7.5 - 10 cm). As plants get older they will tend to "speed up," with terminal shoots eventually advancing 6 to 8 inches (15 - 20 cm) per year.
This cultivar originated as a witch's broom found around 1930 at Goudkade Brothers Nursery, Boskoop, The Netherlands.