Toni at the [url=https://busybeefarm.org/]Busy Bee Farm[/url] (She sells lavender-infused honey to die for! Yesterday, DD7 had some drizzled over her freshly picked -- just went peach picking -- peaches and plain yogurt) told me that flavor of mints get bitter after they flower so keep harvesting to forestall flowering. (Her Applemint-infused honey is terrific too -- GREAT for flavoring iced tea)
That said, I LOVE mint flowers -- as garnish and for drawing ALL KINDS of beneficial insects as well as bee/wasp/butterfly activity.