Planted in May with a mixture of plants, taking into consideration the flowering period, exposure (it's a very windy site), aspect and the main colours of the surrounding (purple and blue).
Plants are, as I remember:
Cercis canadensis 'Forest Pansy'
Salvia 'Wendy's Wish'
stuff you cannot see includes
Agastache 'Kudos Mandarin'
Achilleas in pink and red
Those in the boxer are Sedum'Autumn Splendor' and Heuchera 'Marmelade'
photo from the instagram account of Daily Express