Cornus alternafolia (pagoda dogwood) is a tall, deciduous shrub or small tree, growing to 15 to 25 feet in height, and hardy in areas all the way north to zone 3 (northern New England).  NYBG is at the southern end of its range and it will not grow well south of zone 7.  

In this area, you can successfully grow this flowering, elegantly tiered plant quite easily as long as you give it at least a part-sun siting in well-draining, mildly acidic soil.  In addition to the late spring, scented, white flowers, this plant will reward you with excellent fall color and attractive purple drupes.  It is attractive to butterflies and birds but fairly resistant to deer.

Courtesy of NYBG Plant Information