Dietes iridiodes

(Photo by Ebony Armstrong)

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Taxonomy (3)

Classification: Angiosperm, monocot
Family: Iridaceae
Common name: White African Iris, Fortnight Lily

General Information (1,2,3)

Region of Origin: East and South Africa
USDA Plants Hardiness Zones: 8-11

  • Size: 2-4 feet
  • Deciduous/Evergreen: Evergreen
  • Flowering: Spring to summer

Diagnostic Characteristics

Leaves (2,3)

  • Simple/Compound: Simple
  • Shape: Linear
  • Other: Leathery, 2 feet long

(Photo by Ebony Armstrong)

Flower (1,2,3,4)

  • Color: Milky white
  • Size: 3 inches
  • Other: Larger tepals have yellow marking; style is bluish-purple

(Photo by Ebony Armstrong)

Fruit (2,3,4)

  • Fruit type: Capsule
  • Size: 1-2 inches

(Photo by Ebony Armstrong)

Horticultural Information (2,3)

  • Light: Full sun to shade
  • Landscape Uses: Borders, groundcover
  • Other: Avoid saline areas

Interesting Facts (2)

  • Flowers last for just a day


1) Brickell, C. and Cole, T.J. (2002). Encyclopedia of plants & flowers. American Horticultural Society
2) Collins, Mary. (2012). Fairchild Tropical Botanical Garden.
3) Christman, Steve. (2003). Dietes iridioides. Floridata.
4) Goldblatt, Peter. (1981). Systematics, phylogeny and evolution of Dietes (Iridaceae). Annals of the Missouri Botanical Garden, 68 (1): pp132-53.

Prepared by Ebony Armstrong as a course requirement for BIOL 3630/5630, Spring 2013
Edited by Jessica Bartek