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.
The palace, with its elaborate furnishings and decor, I found impossibly ornate. The gardens were breathtaking.
This flower bed, located in White Rock, BC, Canada, is one of many that imitates the Versailles style.