This style of planting evokes the formal gardens of the French Royal Palace of Versailles.
When I recall my long-ago visit to Versailles, I see the image of the palace's numerous mirrors, which were somewhat spotty, like my memories of that visit nearly forty years ago.
I found the palace, with its elaborate decor and furnishings, impossibly ornate. The gardens were breathtaking.
This flower bed, located in White Rock, BC, Canada, is one of many that imitates the Versailles style.