Photo by Melody

PlantFiles: Chinese Delphinium
Delphinium grandiflorum

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Family: Ranunculaceae (ra-nun-kew-LAY-see-ee) (Info)
Genus: Delphinium (del-FIN-ee-um) (Info)
Species: grandiflorum (gran-dih-FLOR-um) (Info)

Synonym:Delphinium chinense

9 members have or want this plant for trade.

Category:
Perennials

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

Spacing:
15-18 in. (38-45 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)

Sun Exposure:
Sun to Partial Shade

Danger:
All parts of plant are poisonous if ingested

Bloom Color:
Medium Blue
Violet/Lavender

Bloom Time:
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall

Foliage:
Herbaceous
Blue-Green

Other details:
Average Water Needs; Water regularly; do not overwater
This plant is resistant to deer

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)
8.6 to 9.0 (strongly alkaline)

Patent Information:
Unknown - Tell us

Propagation Methods:
Unknown - Tell us

Seed Collecting:
Unknown - Tell us

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By gardengrrl
Thumbnail #1 of Delphinium grandiflorum by gardengrrl

By Vivify
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Thumbnail #7 of Delphinium grandiflorum by altagardener

There are a total of 9 photos.
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Profile:

No positives
2 neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Neutral missiguy72 On Jul 5, 2011, missiguy72 from Indianapolis, IN (Zone 5b) wrote:

This year I bought 2 Delphiniums. When I bought them they were maybe 3 inches tall. I have had them in my flower bed for almost 2 months and they have barely grown... Any advice?

Neutral offshoot On May 11, 2008, offshoot from Oak Park, IL wrote:

Chicago area. Failed to germinate in the garden in 07. Trying again in 08, plus trying starting indoors in vermiculite. Very slow. Six weeks later, one tiny leaf is showing and just sitting there staring at me.

Regional...

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

Carrollton, Georgia
Plainfield, Illinois
Rocky Ripple, Indiana
Vandercook Lake, Michigan
Albuquerque, New Mexico
Portland, Oregon
Genola, Utah
Cathan, Washington



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