Q.Your Email Address
You provided me with an email address, i.e. questions@gardeningknowhow.com. It was rejected stating there was no such address. I found another email address on your web page i.e. questions.gardeningknowhow.com – this too was rejected as being no such address. Can you provide me with a valid email address so that I may contact you. I can now send a photo of my hydrangea which is 32.1/2 in diameter. And I wanted to know if this is an unusual size. I am not able to upload the picture on this page and can only do so by email. I really hope I can get through to you this time.

Certified GKH Gardening Expert
It did come through. This won't be unusual for certain cultivars, and with good care. Here is an collection of articles for more information on the plant:
https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea