Thuja occidentalis 'Silveryana Nana' is a dwarf, globose- to pyramidal selection of eastern arborvitae with upright branching and little tendency to form a dominant leader. Foliage is a combination of juvenile and mature types and grows with nice silvery variegation throughout the plant. After 10 years of growth, a mature specimen will measure 4 feet (1.5 m) tall and wide, an annual growth rate of 4 to 6 inches (10 - 15 cm).
This cultivar is fairly obscure, the name published in 1984 in the ACS ConiferQuartlerly by Robert L. Fincham. Large, old plants are known to exist in arboretums and a few large gardens. It is said to have been selected and introduced to the nursery trade by Jon Spaan of Washington State.
