A minimalistic image plays with a minimum of visual components. In themselves these don't need to be simple. They may be rendered sharp or merely implied. There is no rule set in stones to control this. However, something inside the frame should puzzle us and stir our curiosity, or make us respond emotionally. At times, we can be overwhelmed as to what we'd expect to be present, but has been deliberately left out.
So your fence fits the concept, Bruno ...
I think this Anemone nemorosa has been posted before, but present it again as an illustration of the opening paragraph and the principles outlined therein.