scientific name: Dietes iridioides.
african iris
Also known as: Fortnight Lily, Wild Iris, Morea Iris
Originally from the grasslands of South Africa, African Iris gets its name from the Greek word for "two divine beings" — reflecting its close ties to both the iris and lily families. What surprises most gardeners is that each flower only lasts a day or two, yet new blooms keep coming from spring through fall. With its sharp, upright leaves and strong drought tolerance, this easy-care perennial does beautifully in full sun to partial shade with very little upkeep.