What technique is used in this image to produce such colors?
Is it just saturation and hue adjustment?
I took that picture a few years ago so I don't exactly remember. My usual technique when i used to have photoshop was to start off with the auto adjusts, and then messing around with the curves with no goal in mind. I would just try random things and see which combinations I liked best. Also, for this picture I desaturated it a little bit and added a vignette (which i think is too strong now). Also I took the shot with sunset light which contributed to the golden colors. Rookie editing Now I use Adobe Lightroom and I like it a lot better because its very easy to use.
I think the most important step is with the exposure. The image here has some nice mid to shadow areas to play with, punctuated by a few intense highlights, this also makes most of the image subdued except for the orange and yellow pop of the roses.
After that to my eyes...
There appears to be a moderate amount of contrast, I'm not seeing too many crushed blacks and only a few blown highlights.
Obviously a yellow cast has been added, either by white balance or a color overlay. Saturation seems somewhat high, you can see some of the color of the bench being over-saturated on the left.
I think a good amount of sharpness has been added, possibly by local contrast enhancement (clarity) / highpass sharpening.
Finally, a lot of vignetting has been added, which darkens the edges of the image to focus the image on the subject.
Overall, it's a nice, carefully crafted image.
Photo has a vignette and little sepia effect I believe. I believe also that WB setting is set to cloudy cause it has this yellowish feeling. I believe that red is desaturated a little bit