Photo by Melody

PlantFiles: Jack In The Pulpit
Arisaema triphyllum 'Black Jack'

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Family: Araceae (a-RAY-see-ee) (Info)
Genus: Arisaema (air-uh-SEE-muh) (Info)
Species: triphyllum (try-FIL-um) (Info)
Cultivar: Black Jack

9 members have or want this plant for trade.

Category:
Bulbs
Perennials

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

Spacing:
12-15 in. (30-38 cm)
15-18 in. (38-45 cm)

Hardiness:
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:
Partial to Full Shade

Danger:
All parts of plant are poisonous if ingested

Bloom Color:
Green
Maroon (Purple-Brown)

Bloom Time:
Mid Spring
Late Spring/Early Summer

Foliage:
Herbaceous
Dark/Black
Shiny/Glossy-Textured
Mottled
Veined

Other details:
Requires consistently moist soil; do not let dry out between waterings

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:
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse

Seed Collecting:
Remove fleshy coating on seeds before storing
Unblemished fruit must be significantly overripe before harvesting seed; clean and dry seeds

Click thumbnail
to view:

By TomH3787
Thumbnail #1 of Arisaema triphyllum by TomH3787

By unccgardener
Thumbnail #2 of Arisaema triphyllum by unccgardener

No details have been posted.

Regional...

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

Gwynn Oak, Maryland



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