Photo by Melody

PlantFiles: Birdbill Day Flower, Western Dayflower
Commelina dianthifolia

Family: Commelinaceae (ko-mel-ih-NAY-see-ee) (Info)
Genus: Commelina (kom-uh-LIN-uh) (Info)
Species: dianthifolia (dy-anth-ih-FOH-lee-a) (Info)

Synonym:Commelina dianthifolia var. dianthifolia


6-12 in. (15-30 cm)
12-18 in. (30-45 cm)
18-24 in. (45-60 cm)

6-9 in. (15-22 cm)
9-12 in. (22-30 cm)

Not Applicable

Sun Exposure:
Full Sun
Sun to Partial Shade

Unknown - Tell us

Bloom Color:
Medium Blue

Bloom Time:
Mid Summer
Late Summer/Early Fall


Other details:
This plant is attractive to bees, butterflies and/or birds
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
Unknown - Tell us

Patent Information:
Unknown - Tell us

Propagation Methods:
From seed; direct sow outdoors in fall

Seed Collecting:
Bag seedheads to capture ripening seed
Allow seedheads to dry on plants; remove and collect seeds

Click thumbnail
to view:

By MedHerb
Thumbnail #1 of Commelina dianthifolia by MedHerb


No positives
3 neutrals
No negatives

Gardeners' Notes:

Neutral MedHerb On Nov 3, 2014, MedHerb from Albuquerque, NM wrote:

Neutral Bethy1962 On Jun 13, 2012, Bethy1962 from Derbyshire
United Kingdom wrote:

I am pretty certain that Commelina dianthfolia is a tuberous perennial?

Neutral melody On Mar 7, 2005, melody from Benton, KY (Zone 7a) wrote:

Found in rocky soil, usually in pinon , junipers and other pines. It's range is eastern AZ, to south central CO, and west TX and into Mexico.

Flowers are purple or bluish-purple and atop a branched stem with narrow leaves.


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

Port Townsend, Washington

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