The garden has been inspired by the path Venus takes as it orbits the sun.
“The King wanted to create a garden that reflected the variety in planting, biodiversity and sustainability,” Richard Williams, the Royal Collection Trust’s learning curator, said.
“What’s different from the previous garden, which was really a monoculture, being predominantly rose bushes, is this has much greater biodiversity. There are areas of wildflower meadows, which create wonderful habitat for all sorts of creatures and insects.”
Planning permission was granted to move a sculpture of Hercules and writhing serpent Achelous into the garden after it was removed from Kew Gardens in the autumn.
It had stood there 1963, having been bought by George IV in 1829 and first installed in the Windsor Castle garden in 1909.