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PlantFiles: Larkspur, Delphinium
Delphinium 'Red Caroline'

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

11 members have or want this plant for trade.

Category:
Alpines and Rock Gardens
Perennials

Height:
18-24 in. (45-60 cm)

Spacing:
12-15 in. (30-38 cm)

Hardiness:
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

Danger:
Unknown - Tell us

Bloom Color:
Red

Bloom Time:
Mid Summer
Late Summer/Early Fall

Foliage:
Herbaceous

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

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Thumbnail #1 of Delphinium  by bonniewong

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By ms_greenjeans
Thumbnail #3 of Delphinium  by ms_greenjeans

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There are a total of 8 photos.
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Profile:

1 positive
No neutrals
1 negative

Gardeners' Notes:

RatingAuthorContent
Negative momgardens 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 necrotic and only a little dried up. But the center of the plant has a dead empty hole, around which the stems had grown. No sign of galls or fungus or spores. The stems, which are ready to flower, appear perfect until they fall over. Saw no cutworms, insects, etc.

Does anyone have any idea what this can be? Genetic defect, disease or pest?

Positive ms_greenjeans 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.

Regional...

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

Hopkins, Minnesota
Phillipsburg, New Jersey
Rapid City, South Dakota



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