From the sources "Hydrangeas for American Gardens," by Michael A. Dirr (2004), and "Encyclopedia of Hydrangeas" C.J. and D.M. Van Geldere...Read Moren (2004 - Timber Press):
Both call this a smaller plant but can grow up to 5' tall, but normally around 4'. Flowerheads have many ray-flowers with fewer sterile florets. Flowers early and appear almost a month earlier than other H. paniculata cultivars, the white sepals age to rose, sometimes by July in the south. Leaves are shiny.
From the sources "Hydrangeas for American Gardens," by Michael A. Dirr (2004), and "Encyclopedia of Hydrangeas" C.J. and D.M. Van Geldere...Read More