Experiment by blurring the rose – fill the frame with color – no detail.
The Rose is Heritage by David Austin
Who knows when you might need a blurred image? Blurs came to my attention only recently, and resulted in some good fun. I haven't used my macro lens much lately, but it's expert at filling the frame with rose color, and many blur variations. All you do is move slowly around the rose, and experiment with the focus ring. Only one rose required.
PS The rose in the equation above is Austin's 'Evelyn.' You might notice that the 'Evelyn' blur thumbnail matches the big 'Heritage' pictures, better than the three actual 'Heritage' blurs. Time-of-day changes color at its whim.