Thuja occidentalis 'Holmstrup' is a popular choice where one desires a dwarf, narrow arborvitae for use in a border or as a focal point in a small garden. This selection is quite columnar with compact branching and attractive deep green foliage that holds its color well in cold winters. In essence, 'Holmstrup' is a dwarf Thuja occidentalis 'Smaragd.' After 10 years of growth, a mature specimen will measure 6 to 10 feet (2 - 3 m) tall and 2.5 feet (80 cm) wide, an annual growth rate of 8 to 12 inches (20 - 30 cm).
This cultivar originated as a seedling selected in the late 1940s by nurseryman, Asger M. Jensen of Holmstrup, Denmark. It is occasionally seen listed in a Latinized form, Thuja occidentalis 'Holmstrupensis' or 'Holmstrupii.' It has been easily found In North American commerce since the mid-1960s.
