Spiraea Japonica

My brother gave me a young plant last year grown from a cutting. He told me it would reach a height of approx. 3/4ft and now I'm finding out different! It's now getting on for 5ft and has to be moved from where I thought it would be 'comfortable'. The problem is where to put it. Would it be happy in an exposed site please.

 

Thanks Loofah, but that reads nothing like my plant and mine isn't deciduous. My brother sent me a copy of the label.



I'll have a look around on the web, but the sites don't seem to say whether it will be okay in an exposed position with most plants.