Please can anyone give me advice. I have a narrow border which is in shade in the morning and sun in the afternoon. The sun is more direct towards the center of the border. I planted three cream edged hostas, next to the hostas, three alchemila mollis and next cranesbill blue geranium. All three look lovely together and have grown into clumps that fill each section. Please can anyone suggest what flower to plant next to a cranesbill blue geranium, which has more direct sun than where the first three plants are - the hostas, alchemila and geranium.