In August of 2020, I was given a couple of clippings from my neighbors bluish/dark purple hydrangea. I took 4 clippings home with me to see if I could get them to grow. First time in my life I had ever tried anything like this and they all rooted. I was pretty excited. Now, last summer it developed some buds and I got 'pink flowers' - why did that happen? Why aren't they blue? Here is a pic of each one. I would also like to know if anyone can help me to identify the name of this blue hydrangea?