Those flowers are your deeds and actions. Some of them are good and altruistic, some of them are egocentric and not bad. Some of them are started as good but at the end got out to pretty bad. And we still rationalize them as not that bad(it's a flower). All these actions are influenced and are product of your past (those grey background structures). You don't realize that but your childhood trauma still gets a say in your life even when your kids go to college.