Helenium Gay-go-Round with Calamagrostis Karl Foerster.
Bronze Fennel (Foeniculum vulgare purpurea) with H Rubinzwerg
Big grasses are effective with heleniums - in these two shots behind are Molinia arundinacea forms and Miscanthus sinensis gracillimus with flowers just emerging on left.
A mixed hot border
Helenium Waldtraut with bronze fennel.