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PlantFiles: Larkspur-leaf Monkshood
Aconitum delphinifolium

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Family: Ranunculaceae (ra-nun-kew-LAY-see-ee) (Info)
Genus: Aconitum (a-kon-EYE-tum) (Info)
Species: delphinifolium (del-fin-uh-FOLE-ee-um) (Info)

One member has or wants this plant for trade.

Category:
Perennials

Height:
under 6 in. (15 cm)
6-12 in. (15-30 cm)
12-18 in. (30-45 cm)
18-24 in. (45-60 cm)
24-36 in. (60-90 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
Light Shade
Partial to Full Shade
Full Shade

Danger:
All parts of plant are poisonous if ingested
Handling plant may cause skin irritation or allergic reaction

Bloom Color:
Pale Yellow
Medium Blue
Dark Blue
Blue-Violet
Violet/Lavender
Purple
White/Near White

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

Foliage:
Herbaceous
Dark/Black
Smooth-Textured
Shiny/Glossy-Textured

Other details:
This plant is resistant to deer

Soil pH requirements:
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)

Patent Information:
Unknown - Tell us

Propagation Methods:
By dividing the rootball
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors
From seed; sow indoors before last frost

Seed Collecting:
Allow pods to dry on plant; break open to collect seeds

Click thumbnail
to view:

By kennedyh
Thumbnail #1 of Aconitum delphinifolium by kennedyh

By kennedyh
Thumbnail #2 of Aconitum delphinifolium by kennedyh

Profile:

No positives
1 neutral
No negatives

Gardeners' Notes:

RatingAuthorContent
Neutral JodyC On Jan 28, 2005, JodyC from Palmyra, IL (Zone 5b) wrote:

Aconite poison contains an alkaloid, which paralyzes the nervous system and lowers both body temperature and blood pressure. Whalers used it to immobilize whales. They smeared the poison on the tips of whaling lances, which were thrust into the side or the tail of an animal. The poison did not kill the whale immediately, it acted over several days to paralyze it and it eventually drowned. With luck, the carcass would float to shore, providing food for the community.

Regional...

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

Unalaska, Alaska
Kennebunk, Maine



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