Philadelphus Microphyllus, or more commonly know as Littleleaf Mock Orange, is a shrub with green foliage and white flowers of the genus Philadelphus. It has a moderate growth rate and a height of 15 feet at maturity. Its duration is perennial which means it will grow year after year. It's active growth period is spring and summer, blooms during spring, is intolerant of shade and is routinely available commercially. Philadelphus Microphyllus or Littleleaf Mock Orange's floral region is North America US Lower 48, specifically in the states of Arizona, California, Colorado, New Mexico, Nevada, Texas, Utah and Wyoming.
Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming