Autumn Rocket SasanquaSemi double, WHITE flowers cover this very narrow growing, evergreen plant in November and December. Because of its narrow growth habit, 'Autumn Rocket' is perfect for spots where you don't have room for a wider growing sasanqua, such as narrow beds at the foundation of your home. 'Autumn Rocket' also works well for a flowering, vertical accent planting in place of more common options like 'Emerald Green' Arborvitae or 'Sky Pencil' Holly.