When you shoot close, you can focus front, middle, or back and the effect is very different. The orange begonias are interesting. So bright, they come up best in rather low light. Sunshine on the flowers makes them appear to be on fire — and out of focus.
I have found that focusing on any but the flowers in the front seems awkward when you’re viewing. I’m not sure why, but I have given in and focus tightly in the front and let the rest of the photograph drift back into bokeh.