Celstial Lily, Celestial Ghost Iris, Prairie Celestial

Nemastylis geminiflora

Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Nemastylis (nee-ma-STY-lis) (Info)
Species: geminiflora (jem-in-ih-FLOR-uh) (Info)



Foliage Color:


Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Drought-tolerant; suitable for xeriscaping

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Suitable for growing in containers


6-12 in. (15-30 cm)


9-12 in. (22-30 cm)


USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:

Full Sun

Sun to Partial Shade


Unknown - Tell us

Bloom Color:

Light Blue

Medium Blue

Bloom Time:

Late Winter/Early Spring

Mid Spring


Unknown - Tell us

Other details:

Unknown - Tell us

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Unknown - Tell us

Propagation Methods:

By dividing rhizomes, tubers, corms or bulbs (including offsets)

Seed Collecting:

Allow pods to dry on plant; break open to collect seeds

Properly cleaned, seed can be successfully stored


This plant has been said to grow in the following regions:

Arlington, Texas

Dripping Springs, Texas (2 reports)

Hondo, Texas

Houston, Texas

Kerrville, Texas

Lipan, Texas

Merit, Texas

New Braunfels, Texas

San Antonio, Texas (2 reports)

show all

Gardeners' Notes:


On May 5, 2016, marasri from Dripping Springs, TX wrote:

They grow in a clay deposit in a field around my shop. The dirt has never been altered or amended. They do not grow in my limestone gravely soil or the caliche. They are a sign of a nice wet spring. They do not show their faces in droughty years. I do not water or tend to them in any way and they are fine with it other than taking the dry years off. I tried moving it and it did not take. I did move it to under some oak trees in a limestone soil and shade. I love them and want many more. I am thinking about collecting some seeds and propagating them this fall. Any ideas of how to treat the seed?


On Oct 13, 2006, dmj1218 from west Houston, TX (Zone 9a) wrote:

These bulbs like to be dry when dormant; blooms open midmorning and fade before sundown; blooms March thru May in TX; flowers in shades of blue with the occasional white; native to TX, OK, KS, MO, ARK, LA, MS, ALA, and TN.