A dramatic landscape plant from Siberia. This shrub has attractive, gray-green foliage and showy panicles of white flowers in summer. It is a selection at the Hildreth-Howard Arboretum at Cheyenne, Wyoming, formerly known as the USDA Field Station, where the parent plant has thrived over many decades with minimal care and irrigation. Shrub. Xeriscape. Clay and even part sun/PART SHADE.