Tsuga canadensis 'Little Joe' is a miniature selection of Canadian hemlock that grows in the form of a tight, congested bun, with very tiny dark-green needles. Although purported to be a very tough little plant, it should be planted somewhere that the hot afternoon sun does not reach it. After 10 years of growth, a mature specimen will measure 6 to 8 inches (15 - 20 cm) tall and 10 to 12 inches (20 - 25 cm) wide, an annual growth rate of less than 1 inch (2.5 cm).
This cultivar originated as a seedling selected in the early 1980s by Joe Cesarini of Long Island, New York; who (obviously) named the plant for himself.