Echinacea purpurea Rubinglow and Echinacea purpurea Green Edge Here, at the top of the border near The Mount, it is a battle between the Echinacea Rubinglow and Green Edge, though the balance is far in the favour of plummy purple cultivar. Allium seed heads provide some contrast too. The ground here, as well as being … Continue reading Piet Oudolf Borders at RHS Wisley