Delphinium Species, Carolina Larkspur, Plains Larkspur, Prairie Larkspur

Delphinium carolinianum

Family: Ranunculaceae (ra-nun-kew-LAY-see-ee) (Info)
Genus: Delphinium (del-FIN-ee-um) (Info)
Species: carolinianum (kair-oh-lin-ee-AN-um) (Info)
Synonym:Delphinastrum carolinianum
Synonym:Delphinium americanum
Synonym:Delphinium azureum
Synonym:Delphinium nortonianum
Synonym:Delphinium simplex



Water Requirements:

Very high moisture needs; suitable for bogs and water gardens

Sun Exposure:

Partial to Full Shade



Foliage Color:



4-6 ft. (1.2-1.8 m)


3-6 in. (7-15 cm)


USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

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)

Where to Grow:

Unknown - Tell us


All parts of plant are poisonous if ingested

Bloom Color:


White/Near White

Bloom Characteristics:

Unknown - Tell us

Bloom Size:

Unknown - Tell us

Bloom Time:

Late Winter/Early Spring

Mid Spring

Late Spring/Early Summer

Mid Summer

Other details:

May be a noxious weed or invasive

Soil pH requirements:

Unknown - Tell us

Patent Information:


Propagation Methods:

From seed; direct sow outdoors in fall

Self-sows freely; deadhead if you do not want volunteer seedlings next season

Seed Collecting:

Collect seedhead/pod when flowers fade; allow to dry

Allow seedheads to dry on plants; remove and collect seeds


This plant is said to grow outdoors in the following regions:

Morrilton, Arkansas

Page, North Dakota

Arlington, Texas

Austin, Texas

Dripping Springs, Texas

Fort Worth, Texas

Lipan, Texas

New Braunfels, Texas

San Antonio, Texas

Santa Fe, Texas

Leesburg, Virginia

show all

Gardeners' Notes:


On Apr 28, 2014, GrownativeTX from (Zone 8a) wrote:

I am not sure the growing information that this plant has high water needs is accurate in all cases, as the one in my yard volunteered between the sidewalk and the grass and was not watered except for rain (which my area is already 6" behind in rainfall (typical annual rainfall should be ~ 32") this year and it's only April). It only got saved from the mower, as I could see the delicate foliage was quite distinct from the grass and the plant was taller and putting on buds, so I decided to wait & see what it was when it bloomed. It was worth the wait. I will try to collect seeds and plant them so I have more next year.


On Jun 20, 2007, frostweed from Josephine, Arlington, TX (Zone 8a) wrote:

Prairie Larkspur Delphinium carolinianum is native to Texas and other States.


On May 31, 2007, htop from San Antonio, TX (Zone 8b) wrote:

All parts of the plants of the genus Delphinium contain poisons and should never be eaten. Humans and animals can be fatally poisoned by their consumption. Children are most vulnerable because of their small size and natural curiosity. Toxicity varies according to season and the plants' parts and stages of growth. In addition, the plants absorb toxic entities, such as pollutants, pesticides and herbicides from air, water and soil.


On Jun 7, 2004, erin_buhl from Austin, TX (Zone 8b) wrote:

A beautiful, easy wildflower for your meadow planting. Self-sows and can be a bit invasive in my Austin garden. I used to fight it, but I decided instead to enjoy the maintenance-free spring blooms.


On Apr 30, 2004, AngelinaB from Voca, TX wrote:

Grows wild on Highway 71 between Brady and Voca.