Rhododendron

I bought this rhododendron at the end of last summer, in a half price closing down sale.
It's my bargain in the garden!
It's my pride and joy, and as you can see, it is literally bursting into flower. I've never seen one like it and I don't know the name of it. If anybody out there recognises it, please let me know. I have just tried googling it but there seem to be an endless amount of different kinds out there.
One thing I did learn was that the origins of the name are Greek, Rhodo meaning rose and Dendron meaning tree! Lovely.



The bark on the lower half is all cracked and falling off, should I be worried or is this just growing pains? Anybody, anybody?