Moved into my new house in oct. amazing plants in my back yard. in one corner of my yard is a plant that we aren't sure what it is then last week it started blooming what looked like blue hydrangea's problem is it doesn't grow like a normal hydragea and the leaves don't look right they are oval shaped. came someone please let me know if it is a hydrangea?? and if it what kind so I know how to better take care of it. thank you so much.