May - Iris 'Kent Pride' and Onopordum June - Delphinium 'Blue Nile' and Eremurus 'Cleopatra' July - Diascia, Carex petriei and Allium cristophii August - Digitalis mertonensis and Ligularia 'Desdemona' October - Asters, Artemisia, Gaura, Penstemon, Heuchera December - Dwarf box with Melianthis major behind