to me a good photo has a lot to do with the feelings it provokes or the striking idea. I like this picture because of the criss crossing of the background the one vibrant flower on the bush draws the attention because even though it looks interesting in the back it doesn't detract from the subject.
I had a hard time deciding between color and black and white because having color shows a totally different story than black and white. Black and white seems kind of dead with the flower being the only life. but in color you can see all the things growing besides flowers. so I chose this one because the background it popping with colors, brown, green, red etc. but the simple white of the flower makes it stand out .