Can you take a close up of the stems and leaves? What did the flowers you did get look like?The growth habit looks more like H. arborescens than it does H. macrophylla and you care for them differently so important to ID. The good news is that there isn't really anything you need to do now - the plants lookd relatively happy and healthy despite not flowering heavily.

Personally, I might make sure any weeds at their base were removed and mulch for the winter (avoid piling up against the woody stems). And if it remains dry going later into the fall, give a couple of deep waterings.

Get us a couple of photos to confirm ID and we can tell you more :-))

If they were pruned in early Spring and they were arborescens, they would have produced flower buds. Since they did not and the leaves look like macrophylla-like when I maximize, I would expect them to be mopheads or lacecaps (both are H. macrophylla). Lack of flowers would be due by the early Spring pruning. Non-remontant varieties only produce flower buds in July-August (the blooms open in the Spring) so pruning them in early Spring resulted in no bloomage this year. :o(

They do look very healthy. Keep them well mulched, with 3-4" of mulch year around. Give them some fertilizers in Spring. Keep the soil as evenly moist as you can. Prune after they bloom but before July. You can add coffee grounds, liquid fish or liquid seaweed thru the growing season but stop at the end of June so they will go dormant in the Fall instead of staying in growth mode.

Here is a link that might be useful: More info on hydrangeas

are these close enough for ID?

Yeah, that is good. Thanks. Looks like a mophead. Its flower buds develop in July-August and the flower buds open in the Spring 2015. If you ever need to prune again, do so after the blooms have opened in Spring but before July. Your shrubs have developed invisible flower buds by now.

flower buds open in the Spring 2015

That timing depends a lot on where you live as does the following timing for pruning. Mophead hydrangeas ( and I agree that IS a mophead) in my area do not bloom in spring........they do not start blooming until the end of June and continue on until September, sometimes later. I still have a few buds opeing on my macs :-) And there are other zone 7 locations up north that would prompt a later bloom season than Luis experiences in Texas.

So the instructions to prune after "spring" bloom but not later than July are not universal. July is just the start of my bloom season!

Many hydrangea growers recommend pruning macs as little as possible. You can remove any dead or dry stems as they become apparent (easiest to do in spring as the plant is budding out) and deadhead as desired. But neither of these are really 'pruning' in the strict sense.

It is best to site the plants where they can be allowed to grow to size without any need for routine pruning. But if you do need to reduce size now and then, there are a couple of recommended methods.

Here is a link that might be useful: excellent link on how and when to prune hydrangeas

In my zone 7 here in Va I never prune except dead wood so as not to prune the buds and blooms off. If I prune it is only to bring flowers in the house.

that's great advice everyone.....sounds like the best course of action is to just let them be! I like the sounds of that! I always tend to try and mess with things too much and I cause more harm than good.