I have several hydrangeas at home but, aside from one I bought, they are all "strays" as I call them, meaning forced hydrangeas I got for free from relatives and other folks I know when they start to get ugly in June already. I nurse them back to health and enjoy.
There's one that has always got my attention because it carries both lacecap and mophead flowers.
This is now an old and huge plant (I should re-pot it but the new container would need to be very large) and it only started to show these two kinds of flowers three years ago but has been producing them ever since.
No idea what it is but I am pretty curious.