Picea abies 'Lorenz' is a miniature, irregular-globose selection of Norway spruce with clumpy branching and dense, medium-green needles. After 10 years of growth, a mature specimen will measure 10 inches (25 cm) tall and 12 inches (30 cm) wide, an annual growth rate of around 1 inch (1.5 cm).
This cultivar originated as a witch's broom found in the 1980s by Randy Dykstra of Fulton, Illinois. Randy found the original broom at a private residence in Clinton, Iowa owned by the Lorenz family. In his field notes, Justin "Chub" Harper described the broom as, "small size, very low, very tight." This conifer certainly doesn't exist anywhere in the nursery trade. If an extant propagant exists, it probably does so in the Bickelhaupt Arboretum in Clinton, Iowa where many of Harper's and Dykstra's witch's broom selection live.
