Hydrangeas: Anyone have 'Forever & Ever'?, 0 by Meig

Meig wrote:
I just put 5 of these in next to the patio (AM sun/PM shade) and I am curious if anyone has any info on them. The nursery had a couple of 'Endless Summer' but they were in bad shape so I went for F&E instead. Do these reliably bloom all summer in Z5?

I'm curious how quickly they grow and how large I can expect them to get. I have them planted about 3 feet apart and they have plenty of room to grow into the size the tag said, but I want to know if this is a shrub that tends to get larger than what the tag says. Right now they are about a foot tall by a foot wide.

This are my very first hydrangeas so I want to make sure that I take good care of them and get as much info on them as I can. Thanks for any replies.