Perfect symbiosis

Last sunny weekend, we went off to hike in one of large city parks in Iowa City. This tree drew us for a closer inspections, as it had… pink and white flowers at the same time! First, we thought it had pink buds and white flowers,
but up close it was obvious that there are flowers of two different colors. How is it possible? We followed the flowers down to bottom of the tree :), and saw that there are two different plants, growing together in perfect symbiosis.

I prepared the image for blog, and then had second thoughts. Last week, I was preparing this high contrast black and white image. Can the difference in colors be accentuated on this images the same way? I am still not sure, which one, color or B&W tells a better story of the tree.