Ipomoea Species, Morning Glory, Chinese Water Spinach, Swamp Cabbage, Swamp Morning Glory, Kang Kong

Ipomoeaaquatica

Family
Convolvulaceae (kon-volv-yoo-LAY-see-ee)
Genus
Ipomoea (ip-oh-MEE-a)
Species
aquatica (a-KWA-tee-kuh)
Synonym
Ipomoea natans
Ipomoea repens
Ipomoea reptans
Ipomoea sagittifolia
Ipomoea subdentata
Sun Exposure
Full Sun
Height
8-10 ft. (2.4-3 m)
Spacing
6-8 ft. (1.8-2.4 m)
Hardiness
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
N/A
Bloom Color
Pink
Lavender
White/Near White
Bloom Time
Blooms repeatedly
Other Details
Category
Ponds and Aquatics
Water Requirements
Very high moisture needs; suitable for bogs and water gardens
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
May be a noxious weed or invasive
Soil pH requirements
Patent Information
Non-patented
Propagation Methods
From herbaceous stem cuttings
From seed; sow indoors before last frost
From seed; direct sow after last frost
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
Properly cleaned, seed can be successfully stored
Regional

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

Birmingham, Alabama

Carmel, California

Lakeland, Florida

Pukalani, Hawaii

Marrero, Louisiana

Neskowin, Oregon

Scio, Oregon

Westmoreland, Tennessee

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Gardener's Notes:

6
positives
3
neutrals
4
negatives
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R
R
Lake Park, MN | July 2021 | positive

This is a great vegetable, and very healthy. My favorite green in China (kongxincai);, and one of my favorites in the Pacific Islands (ka...Read More

R
R
Neskowin, OR | November 2017 | neutral

Hi All~ I thought I would provide my 2-cents. I am feeling pretty good about growing Kang Kong (Ipomoea aquatica) on my 1/4 acre duck po...Read More

C
ROSLINDALE, MA | February 2016 | negative

US Federal law prohibits the importation or transportation of this species (both interstate and intrastate). It has been reported in the ...Read More

T
T
Birmingham, AL (Zone 8a) | January 2016 | positive

This interesting, edible plant is easy to grow from cuttings or seed, and thrives in warm, wet environments. Wherever bog conditions are ...Read More

M
Halifax, MA (Zone 6a) | March 2011 | negative

This plant is listed on the USDA website as invasive or noxious. Florida State-listed Invasive and Noxious Weeds.

Ipomoea...Read More

M
| December 2009 | positive

In Indonesia, they are called Kangkung. They were a cheap, easy growing, delicious fast crops. They have lots of nutrition within. We ...Read More

W
Metro DC, MD (Zone 7a) | March 2008 | positive

I fell in love with this plant while living in Taiwan. It is utterly delicious when stir fried in some oil with fresh garlic and a pinch...Read More

G
G
| November 2007 | neutral

What? A weed?? In Malaysia, it's a food crop! It's called Water Convulvulus (or 'kangkong' in Malay). It's commonly stir-fried, or can be...Read More

B
scio, oregon, OR (Zone 8a) | September 2007 | positive

Easily grown in a water tub or a small pond as an interesting edible plant. Not invasive in areas that freeze because you will get 100% ...Read More

F
Josephine, Arlington, TX (Zone 8a) | December 2006 | negative

Chinese Water Spinach, Swamp Cabbage, Swamp Morning Glory Ipomoea aquatica is naturalized in Texas and other States is considered an inva...Read More

R
Ames, IA | December 2004 | positive

There are several subtypes under Ipomoea aquatica. Most are noxious weeds. However, the "alba," or white-stemmed group includes a prize...Read More

P
| September 2002 | negative

The USDA classifies this plant as a Federal Noxious Weed. Importation into the U.S. is prohibited without a permit. It is a prohibited ...Read More

T
T
Murfreesboro, TN (Zone 7a) | August 2001 | neutral

Water spinach leaves are almost arrowhead-shaped, one to six inches long, and one to three inches wide.

This annual vine g...Read More

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