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Iris hexagona (Dixie iris)
Cressler, Alan

Iris hexagona

Iris hexagona Walter

Dixie Iris

Iridaceae (Iris Family)


USDA Symbol: IRHE2

USDA Native Status: L48 (N)

A member of the iris family (family Iridaceae) which consists of herbs growing from rhizomes, bulbs, or corms, with narrow basal leaves and showy clusters at the tips of long stalks. There are about 60 genera and 1,500 species, distributed in temperate and tropical regions. Among them, Iris, Freesia, Gladiolus, Bugle Lily, and Montbretia are popular ornamentals. Saffron dye is obtained from Crocus, and "essence of violets," used in perfumes, is extracted from the rhizomes of Iris.


From the Image Gallery

8 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb
Fruit Type: Capsule
Size Notes: Up to about 3 feet tall.

Bloom Information

Bloom Color: White , Yellow , Blue , Violet
Bloom Time: Apr , May
Bloom Notes: Rarely white.


USA: AL , AR , FL , GA , LA , MO , MS , SC , TX

Growing Conditions

Light Requirement: Sun , Part Shade
Soil Moisture: Moist , Wet
Soil pH: Acidic (pH<6.8)


Conspicuous Flowers: yes
Deer Resistant: Moderate

National Wetland Indicator Status

Status: OBL
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1 (Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here for map of regions.

Web Reference

Webref 57 - Atlas of Florida Plants (2020) Institute for Systematic Botany
Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter

Research Literature

Reslit 2735 - Positive and negative consequences of salinity stress for the growth and reproduction of the clonal plant, Iris hexagona (2003) P. A. Van Zandt, M. A. Tobler, E. Mouton, K. H. Ha...
Reslit 2736 - The effects of maternal salinity and seed environment on germination and growth in Iris hexagona (2004) P. A. Van Zandt, S. Mopper
Reslit 2737 - Delayed and carryover effects of salinity on flowering in Iris hexagona (Iridaceae) (2002) P. A. Van Zandt, S. Mopper
Reslit 2738 - Growth and reproduction of a clonal plant in response to salinity and florivory (2006) M. A. Tobler, P. A. Van Zandt, K. H. Hasenstein, S...
Reslit 2739 - Salinity tolerance and genetic variability in freshwater and brackish Iris hexagona colonies (2010) S. Pathikonda, A. Meerow, Z. He, S. Mopper
Reslit 2740 - Iris hexagona hormonal responses to salinity stress, leafminer herbivory, and phenology (2004) S. Mopper, Y. Y. Wang, C. Criner, K. Hasenstein
Reslit 2741 - Genetic structure and gene flow among south Florida populations of Iris Hexagona walt. (Iridaceae) assessed with 19 microsatellite DNA loci (2007) A. W. Meerow, M. Gideon, D. N. Kuhn, J. C. Motamay...
Reslit 2742 - Site-to-site differences in pollinator visitation patterns in a Louisiana iris hybrid zone (2000) S. K. Emms, M. L. Arnold
Reslit 2743 - The effect of habitat on parental and hybrid fitness: Transplant experiments with Louisiana irises (1997) S. K. Emms, M. L. Arnold
Reslit 2744 - Mating system variation in hybridizing irises: effects of phenology and floral densities on family outcrossing rates (1994) M. B. Cruzan, J. L. Hamrick, M. L. Arnold, B. D. B...

This information was provided by the Florida WIldflower Foundation.
Search More Titles in Research Literature

Additional resources

USDA: Find Iris hexagona in USDA Plants
FNA: Find Iris hexagona in the Flora of North America (if available)
Google: Search Google for Iris hexagona


Record Modified: 2023-04-06
Research By: TWC Staff

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