Cape Sweet Pea, or the okie bean, dolichos pea or mile-a-minute vine, is a species of flowering plant in the legume family. Drought tolerant, evergreen, low maintenance and perennial – more beauty, less fuss. And the fowers mell good. Blooms from early spring through summer. No summer water is needed. This is a perfect vine Dipogon lignosus, the Cape Sweet Pea.