My Flowerless Hydranger

Patience is a virtue! Your plant looks very healthy indeed but the big question is - when and how did you prune it ?
It looks very lush - and I suspect you cut it back too far and so lost the flower buds. Don't feed it - or it will get even more lush - and with any luck you might get a nice surprise later on in the season!

If you didn't prune it at the wrong time, then the other thing might be that, this year, we had a heatwave and drought at roughly the time flower initiation would have begun within the plant - the conditions at that time may well have stopped that process, so it might do it later. But when you pruned is the all important question.

Well I did give it a little prune, I think it was early Spring as I had read somewhere to leave the old flowers on until winter is over? but I wont touch it again and wait and see what happens next year!
Many Thanks Alzhi and Bamboo for your advice.

Well you got that right, by the sound of it - you're not supposed to prune much, and when you do its in the spring, and mostly just removing old flowerheads and any dead stems. One thing occurs to me though - your hydrangea seems to be growing under a tree - that's a very dry place to be and it may also be a lack of water even when we're not in drought - this is important for flower initiation too.

Thanks Bamboo Maybe it is dry! think I will leave it alone and see what happens next year, its been in that place for a number of years, so perhaps needs a rest, Hopefully I will be posting a picture showing an abundance of flowers lol