I did some cut flower arrangements for a client last week; she likes blue. I thought blue hydrangeas might be just the thing- but I was not prepared for these. This is a Dutch blue florist’s hydrangea-wow. I cannot imagine a hydrangea this color in the garden. It seems like this shocking blue would be very difficult to make work with other plants. But if an ultra-blue flowered hardy hydrangea should ever become available in my zone, I would most definitely give it a try.