|I live in Maine on the coast(zone 5)I just bought a Pee Gee Hydrangea(it is about 20-24|
|Hydrangea paniculata or PeeGee Hydrangea will grow in sun all day to partial shade. If the soil is very dry, or where the summers are very hot, it will appreciate some afternoon shade. It will also tolerate a shadier site but will not bloom as well as it would with more direct sun. This is a fast grower so expect several feet of growth per year once it is established. It is a woody shrub and can reach the size of a small tree. Any pruning needed for size control or shaping can be done in late winter each year. It blooms in late summer on new growth of the season.
H. arborescens does well with direct morning sun or very bright dappled light all day. In consistently damp (not wet) soil it will handle more sun. In too much shade it will not bloom very well. This one dies back to the ground each winter and is usually trimmed to the ground each spring whether or not there is winterkill. Prune it off short in late winter to early spring. It regrows and blooms each summer on the new growth. It should reach about three feet tall. It will grow in a container but you will not be able to overwinter it outside in a container. You will need to sink the container in the ground in the fall or bring it into a sheltered but dark and cold place in late fall for dormant storage. It would be better to plant it in the ground if you can.
Enjoy your hydrangeas!