Chamaecyparis obtusa 'Torulosa Nana' / dwarf torulose Hinoki cypress

Chamaecyparis obtusa 'Torulosa Nana' is a dwarf, broadly conical, upright selection of Hinoki cypress with dense, contorted branching, and thick, twisted, fasciated, medium, gray-green foliage. After 10 years of growth, a mature specimen will measure 5 feet (1.6 m) tall and two-thirds as wide, an annual growth rate of around 6 inches (15 cm).

Despite being fairly common in the nursery trade, this cultivar is of unknown origin. Welch and Haddow in The World Checklist of Conifers speculates that the name was first published in 1962 based on a plant in the Gotelli Collection within the U.S. National Arboretum, and therefore illegitimate. The name is thought to have been coined to described young specimens of 'Torulosa'.
Chamaecyparis obtusa 'Torulosa Nana' in a private garden in Olympia, Washington. When photographed in 2013, this 10-year-old specimen was approximately 5 feet tall by 2 feet wide.
Photo by David Olszyk
Chamaecyparis obtusa 'Torulosa Nana' — a closeup of foliage detail.
Photo by David Olszyk