Cool perennial plan

A. Purple coneflower ( Echinacea purpurea; 4 inch)
B. False heather ( Cuphea hyssopifolia; 1 gal.)
C. Gaura lindheimeri 'Passionate Blush' (1 gal.)
D. Salvia 'Waverley' (1 gal.)
E. Heuchera micrantha 'Palace Purple' (1 gal.)
F. Purple fountain grass (1 gal.)
G. Artemisia pycnocephala 'David's Choice' (1 gal.)
H. Dwarf purple fountain grass ( Pennisetum setaceum 'Eaton Canyon'; 1 gal.)
I. Flowering maple ( Abutilon hybrid 'Mobile Pink'; 1 gal.)
J.Hydrangea macrophylla (existing)