Photo by Melody

PlantFiles: Jack In The Pulpit
Arisaema triphyllum

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

15 vendors have this plant for sale.

61 members have or want this plant for trade.

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24-36 in. (60-90 cm)

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

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

All parts of plant are poisonous if ingested

Bloom Color:
Dark Purple/Black
Maroon (Purple-Brown)

Bloom Time:
Mid Spring
Late Spring/Early Summer


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:

Propagation Methods:
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From seed; direct sow outdoors in fall

Seed Collecting:
Remove fleshy coating on seeds before storing
Unblemished fruit must be significantly overripe before harvesting seed; clean and dry seeds
Seed does not store well; sow as soon as possible

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There are a total of 34 photos.
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9 positives
2 neutrals
No negatives

Gardeners' Notes:

Positive coriaceous On Dec 20, 2014, coriaceous from ROSLINDALE, MA wrote:

Curiously interesting, and in its own way beautiful. Almost more than any other plant, this one says "eastern woodland" to me.

Highly variable in many traits, including mature size and spathe coloration.

Takes several years to reach blooming size from seed, and several years more to maturity. Small plants have only male flowers, larger plants have both male and female flowers at the base of the "jack" (the spadix). Plants cannot fertilize themselves.

This species is hardy to Z3.

Positive ms_greenjeans On May 24, 2013, ms_greenjeans from Hopkins, MN (Zone 4a) wrote:

I planted one tiny pot of these a couple of summers ago. They are now starting to multiply and bloom; for awhile I thought they might not work. They are in deep shade, under a huge double-trunked cedar tree, and in close proximity to several black walnut trees-definitely a challenging spot. They are very unique, and I hope they continue to thrive.

Positive plant_it On May 24, 2013, plant_it from Valparaiso, IN wrote:

Gorgeous native plant. It's so cool that we have such a tropical looking plant in the Midwest. Flowers April to May and produces a cluster of red berries mid to late Summer. Tolerates dense shade and being under Black Walnut trees.

Positive trioadastra On May 20, 2008, trioadastra from Ellsworth, WI (Zone 4a) wrote:

These are growing wild in my backyard, so they are definately zone 4 hardy. I had heard they were rare in the wild, but they are coming up everywhere, and spread easily by seed. The young plants only send up one or two sets of leaves, and the mature plants will flower in progressively larger sizes. New corms are smaller than pea size, and I have some large ones that are golfball size. They also transplant easily, and can take a fair but of sun, but like to be kept moist.

Positive Katze On May 14, 2008, Katze from Minneapolis, MN (Zone 4a) wrote:

Plant is native to Minnesota and is hardy to Zone 4 (per care information that came with my plant).

I planted two of these last spring; thought both had died due to over-watering last summer. Today, I was pleasantly surprised to find that one plant is still alive and about to bloom! Definitely a unique-looking plant that adds interest to any shade garden.

Positive Pulpit172 On May 29, 2007, Pulpit172 from Roxbury, NY wrote:

I have 100's of Jack in the Pulpit plants growing behind my house. Its amazing to see these fascinating plants everywhere. Sorry I dont have a picture.

Neutral McCool On May 18, 2006, McCool from Millbury, MA (Zone 5a) wrote:

We have a ton of these growing in the small wooded area in our yard. As far as I know, they planted themselves and are on the increase year by year. They are even sending envoys out into the grassy areas in some places. I think that some of them are enjoying runoff from the huge heap of shredded leaves that we have (composter just can't keep up with them), as the ones in the area just below the compost heap are getting positively huge!

Positive mikki On Jun 18, 2005, mikki from Marshfield, MA (Zone 6b) wrote:

Have many of these growing in the woods behind the house and since I put in the shade garden under the maples they have moved into the shadier, moister area there also! They seem to be increasing every year and are fun to watch.

Positive ariodlove On Jun 23, 2004, ariodlove from Louisville, KY wrote:

Arisaema triphyllium likes deep shade to shade, and hummus rich soil. It is also good to add a layer of mulch on it.They will form large groups rapidly. The pulpit will last about a week or two. The leaves can get 10 inches long. After the pulpit dies , if it is a female, you will see green berries that change to red in the fall. The females will have 2 sets of leaves, while the males will only have one.

Positive MotherNature4 On Aug 5, 2003, MotherNature4 from Bartow, FL (Zone 9a) wrote:

A.triphyllum is growing wild in Polk County, FL. It is a fairly common plant of the wetlands throughout the state. In central Florida, it blooms in late February and early March.

Neutral kat7 On Jul 21, 2001, kat7 from Bloomingdale, NJ (Zone 6a) wrote:

Native to eastern north america. Each of the 2 ft leaf stalks bears three 6" leaflets. Flowering stems, usually taller than the leaves, carry a hooded spathe to 6", green or purple with white stripes (the pulpit), and green or purple spadix (jack). A common woodland plant. The name indian turnip refers to the root which contains calcium oxallate crystals that sting the tongue and throat.


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

Tuskegee, Alabama
Weaver, Alabama
Wilmington, Delaware
Miccosukee Cpo, Florida
Oldsmar, Florida
Saint Petersburg, Florida
Atlanta, Georgia
Cordele, Georgia
Cornelia, Georgia
Cherry Valley, Illinois
Plainfield, Illinois
Bloomington, Indiana
Hobart, Indiana
Indianapolis, Indiana
Valparaiso, Indiana
Barbourville, Kentucky
Melbourne, Kentucky
Elkton, Maryland
Gwynn Oak, Maryland
Laurel, Maryland
Dracut, Massachusetts
Roslindale, Massachusetts
Wellesley Hills, Massachusetts
Belleville, Michigan
Cedar Springs, Michigan
Leland, Michigan
Owosso, Michigan
Pinconning, Michigan
Saginaw, Michigan
Hopkins, Minnesota
Isle, Minnesota
Minneapolis, Minnesota (3 reports)
New Ulm, Minnesota
Saint Cloud, Minnesota
Marietta, Mississippi
Lincoln, Nebraska
Greenville, New Hampshire
Frenchtown, New Jersey
Plainfield, New Jersey
Hilton, New York
Willsboro, New York
Elizabeth City, North Carolina
Grants Pass, Oregon
Walterville, Oregon
Greencastle, Pennsylvania
Wilkes Barre, Pennsylvania
Tiverton, Rhode Island
Viola, Tennessee
Houston, Texas
Blacksburg, Virginia
Broadway, Virginia
Leesburg, Virginia
Port Ludlow, Washington
Elkhorn, Wisconsin
Ellsworth, Wisconsin
Franklin, Wisconsin
Marinette, Wisconsin
Pulaski, Wisconsin

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