Picea engelmannnii 'Willson Park' is a miniature, flattened-globose selection of Engelmann spruce with layered branching and densely arranged stunning Blue foliage. Foliar buds begin to elongate in the spring with a slight twist before unwinding as needles extend. After 10 years of growth, a mature specimen will measure 8 inches (20 cm) tall and 12 inches (30 cm) wide, an annual growth rate of less than 1 inch (2.5 cm).
This cultivar originated as a witch's broom found in 2010 by a group of local ACS enthusiasts led by Salem Oregon's Douglas Wilson. The group found the original broom in Willson park, near the Oregon capitol campus in Salem. The conifer was later introduced to the nursery trade by Conifer Kingdom nursery in Silverton.
