The following perennials are grouped by peak bloom. Most grow throughout the West; some of the early-flowering perennials don't bloom until summer in cooler climates.
Osteospermum ecklonis 'Lavender Mist'. Midspring-fall. Foot-high mound of white daisies that fade to mauve. ZONES: 2b-24.
O. fruticosum. Intermittent year-round bloom. Trailing plants come with white, blue, pink, purple, or yellow blooms. ZONES: 8-9, 12-24, H1-H2.
A. 'Tutti Frutti'. Summer. Pink flowers favored by hummingbirds. ZONES: 2b-24.
A. mexicana. Spring-late fall. Hummingbirds are attracted to the pink flowers. ZONES: 3-24.