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PlantFiles: Gaudy Jack, Jack-in-the-Pulpit
Arisaema sikokianum

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Family: Araceae (a-RAY-see-ee) (Info)
Genus: Arisaema (air-uh-SEE-muh) (Info)
Species: sikokianum (si-ko-kee-AH-num) (Info)

Synonym:Arisaema magnificum
Synonym:Arisaema sazensoo
Synonym:Arisaema sikokianum var. integrifolium

2 vendors have this plant for sale.

23 members have or want this plant for trade.

Category:
Bulbs
Perennials

Height:
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 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)
USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:
Light Shade
Partial to Full Shade

Danger:
All parts of plant are poisonous if ingested

Bloom Color:
Maroon (Purple-Brown)
White/Near White

Bloom Time:
Mid Spring

Foliage:
Smooth-Textured

Other details:
Average Water Needs; Water regularly; do not overwater
This plant may be considered a protected species; check before digging or gathering seeds

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:
Unknown - Tell us

Propagation Methods:
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; sow indoors before last frost
From seed; direct sow after last frost
From seed; germinate in a damp paper towel

Seed Collecting:
Remove fleshy coating on seeds before storing
Wear gloves to protect hands when handling seeds
Seed does not store well; sow as soon as possible

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By clematis
Thumbnail #1 of Arisaema sikokianum by clematis

By Lophophora
Thumbnail #2 of Arisaema sikokianum by Lophophora

By Lophophora
Thumbnail #3 of Arisaema sikokianum by Lophophora

By Lophophora
Thumbnail #4 of Arisaema sikokianum by Lophophora

By daylily970
Thumbnail #5 of Arisaema sikokianum by daylily970

By Shadyfolks
Thumbnail #6 of Arisaema sikokianum by Shadyfolks

By ineedacupoftea
Thumbnail #7 of Arisaema sikokianum by ineedacupoftea

There are a total of 26 photos.
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Profile:

1 positive
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive clematis On Jul 24, 2002, clematis wrote:

This is a most unusual plant, owing to it's long spadix which is a creamy white and protrudes upward from the brownish-maroon spathe. Of three that I planted, two have bloomed in two consecutive years. The third has disappeared, but may return as this is often the habit of arisaemas. Of the two that have bloomed, the one grown in the deeper shade grew the largest and had the most foliage. My Shade Garden gets no full sun, but receives some dappled sun from about ten am to one pm. I am located in Zone 5, but verging on Zone 6. It was most satisfying to see this plant bloom as my A. draconiums and A. consanguineums, planted at the same time, have yet to bloom, though they send up much foliage.

Regional...

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

San Francisco, California
San Leandro, California
Grand Junction, Colorado
Wilmington, Delaware
Winnetka, Illinois
Louisville, Kentucky
Gwynn Oak, Maryland
Jamaica Plain, Massachusetts
Newtonville, Massachusetts
Grand Rapids, Michigan
Ringoes, New Jersey
Brooklyn, New York
Apex, North Carolina
Cincinnati, Ohio
Knoxville, Tennessee
Broaddus, Texas
Keller, Virginia
Lexington, Virginia
Liberty, West Virginia
Kansasville, Wisconsin



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