Carolina Larkspur (Delphinium carolinianum)

Carolina Larkspur

Delphinium carolinianum

Carolina Larkspur is a tall, upright perennial growing 1 to 3 feet in height, with striking spikes of blue to violet flowers blooming from late spring to early summer. It prefers well-drained soils and is commonly found in dry prairies, savannas, and open woodlands. The plant provides nectar for pollinators, particularly bees and butterflies, but is toxic to livestock if ingested. Carolina Larkspur adds vertical interest to native plant gardens, prairie restorations, and pollinator-friendly landscapes.

Characteristics

Product Form	Plant
Type	Forb
Sun	Full Sun, Partial Sun
Soil	Clay, Loam, Sand/Gravel, Calcareous
Moisture	Dry, Mesic
Average Max Height (inches)	36
Suggested Plant Spacing (inches)	15
Bloom month(s)	June, July
Bloom Color or Type	White
Dominance	Low

Range Maps

Sowing Information

Sow seed onto a firm, weed-free seedbed. Hand-broadcast seed making two perpendicular passes for even coverage. If planting a mix, broadcast the grass component first and lightly rake/drag it into the top 1/8–1/4" of soil. Next, broadcast wildflower/forb seed and press it into the soil surface (with a roller/cultipacker or the back of a rake) to ensure good seed-to-soil contact. After seeding, apply a very light layer of clean, seed-free straw (or other weed-free, site-appropriate mulch) to reduce erosion and retain moisture without smothering seedlings. A good rainfall or thorough watering will help settle seed and mulch and improve germination.

Planting Information

Dig a hole in your planting site slightly larger than the plant’s root system. When placing the plant into the hole, ensure that the soil line remains consistent with its original level in the pot. Fill in around the roots with the excavated soil, gently firming it to eliminate air pockets. Water the plant thoroughly the same day to promote successful establishment.