This photo of a Japanese Anemone has a kind of purity on it. It is a very simple image and I believe the best visual works are the ones that can provoke strong feelings or assert deep ideas through simplicity, with no distraction.
The white petals certainly help bring this idea of innocence which is intrinsic in the color symbology itself - reason why traditionally brides wear white. But the string sensation of visual purity is highlighted by two other main aspects of this photograph itself.
The first aspect is the fact that it presents a few elements to look at and, by that, I don't only mean the flower alone but also the color shades and textures. Our eyes don't have to travel much beyond the flower and for very long to have the complete picture formed on our mind. Nonetheless, the two elements behind the Anemone flower, together with the flower stalk, form lines that work as trails to our eyes pointing them to the center of the image, to the main subject, when our eyes go beyond it. These elements drag our attention back to the flower in a pleasing and natural way.
A second point in the blurred green background. The green color brings the feeling of nature to our mind which is also related to the symbolism of purity. The green color tones in the background vary from dark to bright but not strong enough to become a distraction, not forming shapes and lines distinct enough to interfere with the main elements. Around the flower is almost an empty space feeling but with this purity tone of green color that makes the subject enhance as a pure and innocent element.