Thanks for posting that second shot, Griddi.
It enabled me to compare with your original which I still had on my desktop. Warning: my comparisons can get a bit technical. But first, your two shots as posted:
I can see why you felt the need to add a bit of pzazz to the un-processed version!
I have an app where you can show various "planes" of an image. It "decomposes" an image into it's brightness, saturation and color hue - three different layers, so to speak. GIMP can do the same thing. Here's the saturations compared:
From this we can see that, as far as color saturation is concerned, the one on the left is over and the one on the right is under, IMHO. In the past here, I have implied that there should be no over-saturation in flower images but lately I'm moving to think that a little is OK - kind of like blown specular highlights are OK.
So possibly if you backed off the saturation in the left image a bit, the image would still look colorful but not blatantly so.
I notice that you posted in Adobe RGB. Those of us with color-managed browsers and sRGB monitors will see some additional apparent over-saturation because the browser will map out-of-gamut colors to the edge of the sRGB color space (anything at the edge is 100% saturated). Here are the 2D Lab gamut diagrams of your images compared (versus an sRGB gamut):
We can see that the colorful image has colors outside of the sRGB gamut boundary. They would be changed by the browser (moved to the sRGB gamut boundary shown). We also see that the less-colorful image has some space within the sRGB gamut to increase the color saturation.
Hope this helps understand my POV . . .