Blooming March and April in pink, clover-like shaggy masses on hillsides and valleys, is the annual wildflower, purple owl’s clover (Castilleja exserta, formerly Orthocarpus pupurascens). The upright, ...

Purple prairie clover, Dalea purpurea, is a deep-rooted prairie plant that looks fragile and thread-like in early spring, particularly in nursery pots. But it develops deep taproots that help it ...

Purple prairie clover is a tough, upright plant with abundant purple flowers that are impervious to late summer heat and drought. A deep-rooted, nitrogen-fixing legume, it can handle and improve ...