Poorly rhododendron???

We purchased this rhododendron last spring and planted it in the ground. It was fabulous as can be seen in the photo. I am new to gardening but did all my research and thought I did everything right. Kept it watered during the summer, mulched with plenty of ericacious compost etc. this year the buds have appeared long and thin instead of short and fat! They have started to open but there does not seem to be any flowers inside! Again see pics. Please 



can anyone advise why this has happened and what I should do next?
Many Thanks.





Many Thanks.
0
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Cause he thinks she melts when he touches her
She knows she's the chocolate girl
Cause she's broken up and swallowed
And wrapped in bits of silver
A lack of water during the summer can cause the plant not to flower the following year as it's stressed so may not form flower buds, or it may form flower buds that turn brown and then drop off.
Your plant looks very healthy and new leaves are forming at the top so it may well be as said above that your plant is concentrating on growing a good root system.
In the summer you should be able to spot next years flower buds forming - that's when it need water most to form flowers.
Wisdom is not putting it in a fruit salad.
Your plant looks really healthy so don't worry, bet it will flower next year.
Now that it's planted, it'll settle in and you'll get flowers at the more normal time, as long as it's not short of water in late summer/early autumn, when they form, as already said
Yes - those are new leaves appearing, not flower buds.
You may find it'll outgrow that space in time though - depending on the variety.
thanks
They don't always make great potted specimens. Far more work involved to keep them happy. In a pot, you need a soil based medium, not just compost. Compost is only suitable for plants short term.
If you decide to do it, it's better to do it soon, so that it gets a chance to settle again.