The wind does add a nice blur effect to this image, but what I like best is the muted colours. Very painterly and calming. Sharpness and detail aren't an issue here, but the image as a whole is wonderful!
Thanks Kim for your comment - to be honest I like muted colours as they appear much more natural to my eyes than a lot of the oversaturated pics I see. It's all muted and seldom sharp in my world :-))