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Delphinium, Larkspur 'Red Caroline'


Family: Ranunculaceae (ra-nun-kew-LAY-see-ee) (Info)
Genus: Delphinium (del-FIN-ee-um) (Info)
Cultivar: Red Caroline


Alpines and Rock Gardens


Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Unknown - Tell us

Where to Grow:

Unknown - Tell us


18-24 in. (45-60 cm)


12-15 in. (30-38 cm)


USDA Zone 3a: to -39.9 C (-40 F)

USDA Zone 3b: to -37.2 C (-35 F)

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)

Sun Exposure:

Full Sun

Sun to Partial Shade


Unknown - Tell us

Bloom Color:


Bloom Time:

Mid Summer

Late Summer/Early Fall



Other details:

Unknown - Tell us

Soil pH requirements:

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

7.9 to 8.5 (alkaline)

Patent Information:

Unknown - Tell us

Propagation Methods:

By dividing the rootball

Seed Collecting:

Allow seedheads to dry on plants; remove and collect seeds


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

Santa Rosa, California

Hopkins, Minnesota

Phillipsburg, New Jersey

Rapid City, South Dakota

Gardeners' Notes:


On Jun 2, 2014, momgardens from Alpha, NJ wrote:

The orangey blooms of Delphinium Red Caroline immediately caught my attention in the nursery, but I knew the color was unlikely in this species.

Upon packing the plants into the car, I saw that one stem had already been damaged and didn't think anything of it. I placed the plants in the sun, watered them appropriately until planting day. The next morning, another stem was flopped off each of two plants, broken near the base. Same thing next day, and day after. By planting day, only one stem on each plant remained and it fell off when I got the plants in the ground. Enough! I asked for a refund from the nursery and refused new replacement plants. I figure there's something wrong with the cultivar, or it's diseased.

The break at the bottom on the stem isn't nec... read more


On Jun 28, 2010, ms_greenjeans from Hopkins, MN (Zone 4a) wrote:

I planted my first delphinium last year - Red Caroline. I then planted two others after that, a purple and a light blue. Although this is the shortest in stature, the color really pops and draws a lot of comments. It is a really true bright red. It did return this year, bigger and better, much to my surprise.