Echinacea purpurea 'Milkshake' from Plants Nouveau could be the best double white echinacea for the
mid-border. Blooms are held high on strong, sturdy stems, and they do not age until fall. The plant is also very sturdy and strong. Blooms are the size of Coconut Lime’s , but they are almost true white, with a hint of french vanilla color. The ray petals are long and drooping, and the cone has white to creamy-white, double flowers covering the entire surface.