It looked like a hydrangea Annabelle to me.
here is a photo of some from Wisley last weekend - they are pretty spectacular, and dead easy to grow (I've got some)
And here are mine in a border - 2 plants in each clump
I agree with chicky
chicky your borders look gorgeous this year and well done to your daughter too you must be so proud x
chicky was def right and it is called annabelle
Beautiful I found the pic on the highclerk castle website, looks like it would be good one to visit
Thanks Beaus Mum - we are very proud of her
Gertie Grass, have you seen this thread? http://www.gardenersworld.com/forum/the-potting-shed/gardens-we-have-visited-2015/683926.html There is one for 2014 and 2013 too.
Posts
It looked like a hydrangea Annabelle to me.
here is a photo of some from Wisley last weekend - they are pretty spectacular, and dead easy to grow (I've got some
)
And here are mine in a border - 2 plants in each clump
I agree with chicky
chicky your borders look gorgeous this year
and well done to your daughter too 
you must be so proud x
chicky was def right and it is called annabelle
Beautiful
I found the pic on the highclerk castle website, looks like it would be good one to visit 
Thanks Beaus Mum - we are very proud of her
Gertie Grass, have you seen this thread? http://www.gardenersworld.com/forum/the-potting-shed/gardens-we-have-visited-2015/683926.html There is one for 2014 and 2013 too.