Tsuga canadensis 'MonKinn' is a fairly new introduction of Canadian hemlock, currently marketed under the commercial trade name of Golden Duchess„¢. It is a compact, upright to arching, and mounding conifer with a vigorous and moderately fast-growing growth habit. 'Monkinn is freely branching, creating a dense bushy form. Foliage is bright yellow-green in color and is tolerant of full sun. However, if grown in too much shade, the gold won't be as prominent and the plant will appear basically green. With that, definitely site the plant where it will receive at least a few hours of morning sun.
After 10 years of growth, a mature specimen will measure 3 to 4 feet (1 - 1.2 m) tall and 3 to 5 feet (1 - 1.5 m) wide, an annual growth rate of 4 to 6 inches (10 - 15 cm).
This cultivar originated as a branch sport found in 2000 by Monrovia nurseryman Ron Kinney in Dayton, Oregon, USA. This new cultivar was first propagated in December 2007. In 2015, 'MonKinn' was award U.S. Plant Patent #25,503.
