How many hours of light? I'd check do a study one day, going out every hour so you have an idea of how much light it would have during the growing season, both on the brighter and shadier side of the house.

One row of all the same kind of plant most likely won't grow all at the same rate or to the same size, however, since growing conditions will be different.

The front of the house gets direct light until about 11am (filtered on the left through tree). At about 2pm just the left side gets some of those afternoon rays through the trellis for maybe an hour. The house across the street from us is white and bounces back indirect light since it faces SW.

My house also faces east and has nearly the same setup with the tree on the left side. I have paniculata and serrata planted, but they do bloom abundantly with no trouble. The mopheads on the north side don't bloom reliably since I'm in a colder climate, but they also bloom fine despite being in almost full shade when a few twigs survive the winter. I think you would have more sun than they get, so I can't imagine it would be a problem at all as far as light is concerned.

Thanks, wildhaven! What cultivar do you have planted?

Hydrangeas should bloom reliably in 7a in anything but deep shade.

Unfortunately, I have no idea what the mopheads are. They were from a "free landscaping to good home" post on Craigslist where the homeowner had just purchased the place and didn't know anything about them. The blooms are soft pink in my alkaline soil, but that's about as good as I've got.

Either way, I think a row of hydrangeas would look lovely in front of your home and I'd give them a try in an instant!