Thanks to each of you for your helpful feedback.
Concerning the yellow flowers: I'm usually pretty sensitive to light-toned areas near an image border. They tend to catch my eye, and that prompts me to consider whether they are adding something or are instead an unwanted distraction towards the periphery. In this case the flowers weren't prominent enough to draw my attention, and considering it now, it's not a big issue for me. But I can see that cropping a little tighter at the bottom might be an improvement.
Stamper, I'm often in agreement with you about "nitpicking", but the comments here really don't bother me. They seemed to be offered respectfully, in the spirit of trying to help make a good image a little better.