Basket of gold (Aurinia) Coreopsis False sunflower (Heliopsis) Flax (Linum) Helenium Joe Pye weed (Eupatorium fistulosum) Lavender cotton (Santolina) Lilyturf (Liriope) Mexican hat (Ratibida) Perennial Alyssum Snow-in-summer (Cerastium) St. John’s wort (Hyperium) Sundrops (Oenothera) Thyme (Thymus)