Many hydrangea are not happy in Utah...the heat, low humidity, and alkaline soils. This one is commonly seen. I've Known it for years but can't put the correct name on it. Looking at the data base just confused me[which is not hard]. Any ideas?

Looks to me like Hydrangea arborescens 'Annabelle' https://www.mobot.org/gardenin...

In fact, one of your photos is in the ATP database for this plant Smooth Hydrangea (Hydrangea arborescens 'Annabelle')

An old standard cultivar, huge blooms. Sound right?

Thank you...now it makes me wonder if the picture I put on the data base some time ago is correct. It seemed like a more refined variety as I remember. I took that picture a couple of years ago in a friends garden and will need to go back and see if he still has the plant and what it looks like. The pictures I put here for ID are an old variety......

Could be Hydrangea arborescens 'Grandiflora'

http://www.naturallandscapesnu...

http://www.missouribotanicalga...

http://woodyplants.nres.uiuc.e...

More valuable information.......I think my picture of 'Annabelle' is in the correct place and this is 'Grandiflora". The second and third link pictures look just like it and the statement that it has been available since 1900 makes sense as I have seen it for many years....but not over 100. Thanks again to both of you. I will wait a while and then add photos to data base later.

Hopefully you will get to see it for a hundred years Paul! My feeling is it's Grandiflora too.