You could get more flowers in focus stopping down, but to the detriment of the bokeh. (although you can still get a pleasant bokeh @f/4 depending the lens)
Endless dilemma !
And you could take several pictures of the same subject with different f/stops and compare the results.Tripod needed, BTW...
The only way to obtain both creamy bokeh and improved DOF, it's focus stacking. Have look on Michael Erlewine work.