Amorphophallus Species, Devil's Tongue, Snake Plant, Konjac, Konnyaku Potato, Voodoo Lily

Amorphophalluskonjac

Family
Araceae (a-RAY-see-ee)
Genus
Amorphophallus (a-mor-fo-FAL-us)
Species
konjac (KON-jak)
Synonym
Amorphophallus mairei
Amorphophallus nanus
Amorphophallus rivierei
Sun Exposure
Light Shade
Partial to Full Shade
Full Shade
Foliage
Grown for foliage
Herbaceous
Textured
Veined
Height
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)
Spacing
18-24 in. (45-60 cm)
Hardiness
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)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
USDA Zone 11: above 4.5 °C (40 °F)
Danger
Parts of plant are poisonous if ingested
Bloom Color
Medium Purple
Maroon/Burgundy
Bloom Time
Late Spring/Early Summer
Other Details
Category
Bulbs
Vegetables
Ponds and Aquatics
Tropicals and Tender Perennials
Water Requirements
Requires consistently moist soil; do not let dry out between waterings
Very high moisture needs; suitable for bogs and water gardens
Foliage Color
Dark/Black
Where to Grow
Bloom Characteristics
Bloom Size
Other details
May be a noxious weed or invasive
Soil pH requirements
6.6 to 7.5 (neutral)
Patent Information
Non-patented
Propagation Methods
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From seed; germinate in a damp paper towel
From seed; germinate in vitro in gelatin, agar or other medium
Seed Collecting
Allow pods to dry on plant; break open to collect seeds
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
Regional

This plant is said to grow outdoors in the following regions:

Bessemer, Alabama

Fox, Arkansas

Carlsbad, California

Simi Valley, California

Bartow, Florida

Brooksville, Florida

Dunnellon, Florida

Fort Mc Coy, Florida

Gainesville, Florida

Lawtey, Florida

Loxahatchee, Florida

Saint Petersburg, Florida

Sarasota, Florida

Winter Haven, Florida

Woodstock, Georgia

Newburgh, Indiana

Winfield, Kansas

Kenner, Louisiana

Prairieville, Louisiana

Compton, Maryland

Cumberland, Maryland

Fallston, Maryland

Levittown, New York

Elizabeth City, North Carolina

Fayetteville, North Carolina

Columbus, Ohio

Hamilton, Ohio

Hubbard, Oregon

Toledo, Oregon

Philadelphia, Pennsylvania

Wilkes Barre, Pennsylvania

Clemson, South Carolina

Fair Play, South Carolina

Spartanburg, South Carolina

Lafayette, Tennessee

Westmoreland, Tennessee

Hempstead, Texas

Pflugerville, Texas

San Antonio, Texas

Mc Lean, Virginia

Richmond, Virginia

Issaquah, Washington

Kalama, Washington

Prescott, Washington

Cabin Creek, West Virginia

Marinette, Wisconsin

Racine, Wisconsin

show all

Featured Videos

Gardener's Notes:

11
positives
2
neutrals
0
negative
Sort By:
Sort By:
J
Clemson, SC | October 2018 | positive

Handsome, sculptural, and exotic. The bloom is a gothic delight and the smell really isn’t that strong or long lasting. Ours are plan...Read More

P
P
Hamilton, OH | May 2013 | positive

I have had these for over 50 years, I now have ten blomming and about 60 plants, see them on facebook pleas martin but they do smell bad....Read More

A
Carlsbad, CA (Zone 10b) | August 2011 | positive

I purchased this two years ago, fascinated by its giant leaf. At that time it only had one large stalk but a month or so later 2 or 3 ba...Read More

S
Cabin Creek, WV (Zone 6a) | December 2010 | positive

I have one about to bloom from a baby bulb. Seeds should never be allowed to dry out, if that happens seed will die, keep them moist unti...Read More

N
Creighton, NE | August 2010 | positive

I received 2 corms this spring, 1 very tiny and 1 about 2.5 in. across. Planted in Miracle Gro and both came up. I've had them outside ...Read More

M
| May 2010 | positive

Flower Stinks because the polinization needs to be done by fly's
so it smells like a dead animal
I will post a pic of my p...Read More

S
Columbus, OH | April 2010 | neutral

We started with a bulb and had a multiple branched small tree the first season, this year the plant came up as shown, large stalk with a ...Read More

E
Waterford, PA | July 2009 | positive

My family has grown Hydrosme Riveiri for many years. Several have had bulbs that fit snuggly in 5 gal. pails when they began their bloom...Read More

B
Birmingham, AL | April 2005 | positive

I'm relatively new to the gardening world, and am more full of questions than answers. I bought a house two years ago and was given seve...Read More

K
K
Mechanicsville, IA (Zone 5a) | September 2004 | positive

I have planted this plant for over 10 years. It is fascinating to watch it grow. I plant them very close together in my flower bed or in ...Read More

Y
Lebanon, TN | June 2004 | neutral

i have heard about these before. i would love to know where i could buy one or the seeds. thank you yabedog. e mail ...Read More

V
| March 2004 | positive

Last spring we had one of these growing on a side table in the dining room. One day my son and I came home for lunch and I smelled a disg...Read More

L
Grove City, OH (Zone 6a) | August 2002 | positive

Potted can be sunken into a water garden or bulbs can be planted directly into the soil. They are very frost sensitive, and should be li...Read More

Featured
Julia
(Dryas iulia)
American Wigeon
(Anas americana)
Featured
Julia
(Dryas iulia)
American Wigeon
(Anas americana)