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Fortnight Lily
Fully Open Fortnight Lily; photo: cehwiedel
Partially Open Fortnight Lily; photo: cehwiedel
According to Pat Welsh’s Southern California Gardening, this common garden flower comes in two varieties: white with orange splotches (Dietes vegeta or D. iridioides) and yellow (D.
bicolor). On the other hand, the Sunset Western Garden Book lists a second common name (African iris) and mentions hybrids ‘Lemon Drops’ and ‘Orange Drops’ and includes a sketch that most closely resembles the large photo below, rather than the small photo at the upper left. On the third hand, Desert Tropicals has a very nice photo of a Fortnight Lily (Dietes vegeta) resembling the small photo. In any case, the leaves are the same, and the flowers, whatever their shape and color, are jewels that brighten any garden and especially so on a dewy morning.
Pat Welsh is a bit cranky concerning the overuse of fortnight lilies in gardens in southern California: “It’s good near swimming pools and is drought resistant, easy to grow, and one of our commonest plants —
some people think it’s much too common.” She suggests  light feeding and watering well during the heat of August. In October, dig up the shallow-rooted clumps and trim the foliage to a length of four or five inches before replanting.
The folks at Sunset warn that fortnight lilies will happily seed themselves, so the pods should be removed to prevent propagation and promote further flowering.
The North Caroline State University extension service provides information on the fortnight lily, including a photograph. Their page also adds
Fortnight Lily bud & blooms; photo: cehwiedel
another common name to the list: butterfly iris. Monrovia Growers, headquartered not far from my house and supplying wholesale plants to retail garden centers, credits a photo to Peter A. Hogg whose subject resembles the small photo on the upper left. Extensive information is available by following links to design ideas, companion plants, and care instruction.
The Texas A&M extension service recommends the fortnight lily, giving initial care instructions and suggestions for grouping with other plants, adding to the suggestions found at Monrovia.
The Banana Tree has a startlingly three-dimensional photo similar to the variety in the upper left here.
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