Glorifying Morning Glories

Three of the pictures below are are not of the same Ipomoea. It’s three different species, but that should tell you something. When you see a Morning Glory species with a large, white blossom and a ruby throat it is worth investigating. Large white Morning Glories flowers without ruby throats are worth investigating, too. Other color blossoms are more iffy.

A word of warning:  There are several edible and several inedible Morning Glories and impostors. They can all be easily sorted out so do your homework. When you find a possible edible take a picture and research it!

Ipomoea pandurata, Wild Potato Vine

Ipomoea pandurata (eep-oh-MEE-uh  pand-yoor-RAY-tuh, shaped like a fiddle)  is native to Florida and the eastern half of North America. It has a large root that can be eaten if cubed and boiled in at least two changes of water. Never eat it raw. It is also called Wild Potato Vine and “Man of the Earth” because it can create huge roots. Younger and smaller is better. Young roots can also be roasted but they will be on the bitter side.  Boiling twice is the preferred method, then roast the boiled cubes if you like. Usually straight down deep from where the vine goes into the ground you will find the root. Yard-long roots weighing 25 pounds are possible. But, they get more acrid the older they get so if you can find an big old one you might want to let it be and look for a smaller younger one nearby.

I looked for I. pandurata for many years before I found one, being constantly misled by the iffy Alamo Vine. My friend and teacher, Dick Deuerling spoke of the I. pandurata often but all I ever saw was the very common Alamo Vine.  Then one day while on the Orange County Bike Trail near Chapin Station there it was (such moments are important and remembered.) Now I see them often. Leaves are heart-shaped.

The I. pandurata has two similar looking plants. They have white flowers as well. The key to sorting them out are the leaves and flower size. The aforementioned Alamo Vine (Merremia dissecta) has small white flowers with a ruby throat and very dissected leaves that are shaped like fingers on a hand, read palmate. While not edible per se the Merremia dissecta is not totally with out some good features. It has been used as a condiment and for medicinal needs. Leaf extracts have an almond flavor from amygdalin, a cyanide precursor also called natural laetrile. Needless to say it can be toxic stuff if handled poorly either as a flavoring or a medicine. I offer no instruction on that. Crush a leaf and smell it. If you smell almonds you have the M. dissecta. That said, the young roots of a relative, Merremia dissecta var. edentata, are cooked and eaten but it only grows in central South America. The M. dissecta edentata leaves are not toothy and the flower’s throat is not ruby. The name Merremia may be from the name Miriam, meaning Mary, or Virgin Mary plant, said me-REE-mee-uh. Dissecta is said dy-SEK-tuh and means dissected. Edentata, e-DEN-tay-tuh, is toothless.

Ipomoea aquatica, Water Spinach

Our next Morning Glory on the white and ruby line up is Ipomoea aquatica, (eep-oh-MEE-uh a-KWA-ti-ka, water loving.) It’s a native of China called “water spinach.” If you do find it, depending where you live, you’re expected to report it because it grows aggressively. Where fresh water doesn’t freeze, such as Florida, it is colonizing the waterways. In northern areas, winter keeps it in check.

There are two versions of I. aquatica, narrow leaf and wide leaf, both are edible. And actually they come in two colors. The “green” version has green stems and white flowers with red throats. The “red” version has purple-tinged stems with pink or lilac flowers with red throats. They both grow only in water, or very damp soil. The vines, with milky sap, can reach up to 70-feet long (the state of Florida says only nine feet.) Shoots and leaves are the edible parts. You will not find this in dry areas.

Recognized as a potential problem in Florida since the 1950s, I. aquatica has been introduced into the state several times since 1979 by various Asian communities.  It is raised as a vegetable in Florida under strict conditions and only for out-of-state sale. It is also cultivated in Texas, Hawaii and California. In the United States it is found in the wild in (mostly central west) Florida, Hawaii and Puerto Rico.

Should you find it do your best to stop its spread by devouring said. It’s the civic thing to do. It can be eaten raw when found in wholesome water. Otherwise, it should be cooked. The leaves are 48% carbohydrates, 24% proteins, 13% ash. They are rich in minerals and a good source of  vitamins A, C and E. It is a major food crop and vegetable in the Orient. The roots are sometimes eaten. Like other members of this family, they are toxic to horses.

Ipomoea batatas, the Sweet Potato

Our third similar Morning Glory is the common cultivated Sweet Potato, Ipomoea batatas (eep-oh-MEE-uh  bah-TAY-tas.) As we already know the root is edible but so are the leaves, cooked like a green. There’s a huge variety of them you can raise. More so, in the winter time if you have a sunny window, you can put a root in partial water and will will grow greens for you through the winter. The Sweet Potato is mistakenly called yams.. well… that’s not originally true. More than a century ago the marketing decision was made to call Sweet Potatoes “yams” because true yams, of the Discorea genus, were widely eaten. That moved into common language and now, wrongly, the Sweet Potates are sold as yams and true yams are sold as yams, but rarely canned in this country. To make things worse in other countries the root of the edible  Oxalis tuberosa, is also called a yam.

Another white and red combo is rare so no picture, Ipomoea macrorhiza (large root) a perennial vine from large tuber. The rare night-flowering morning glory is found in coastal areas of the southeastern US. It was presumably introduced from the Yucatan by aboriginal inhabitants before Columbus. Found on Indian shell middens, large roots were cooked, might be edible raw. Plant has attractive crinkled foliage and large white to pale pink flowers which bloom at night like moonflower, which is up next.

Ipomoea alba, Beach Moonflower

We keep the large white flower but abandon the ruby throat. We have two examples which are very similar. The first is Ipomoea alba (eep-oh-MEE-uh AL-buh, white) a night-blooming morning glory with a very fragrant, luxurious flower. Its sepals are mucronate ( that is having a fine point often rising abruptly at the tip.) Note it is a white flower without any color in the throat — okay a little yellow maybe — though it has a five-star like greenish wrinkling or folding on the top of the blossom, technically called midpetaline bands. The leaves are heart-shaped. Nicknamed, Moonflower, the young leaves and fleshy calyces are edible when cooked. They can be boiled or steamed. They can also be dried for later use.  Seeds edible when young. Incidentally, it takes the flower about a minute to open. It is also sometimes called Calonyction album. The raw leaves can be used like soap. Looking nearly identical is the Ipomoea tuba, (eep-oh-MEE-uh TOO-bah

I. tuba, aka Beach Moonflower, has has thicker leaves than the I. alba and likes a coastal environment, such as mangrove swamps. It is used the same was as I. alba. I. tuba is found from about St. Petersburg Fl. south on the west coast of Florida. To help identify it from the I. alba where their range overlap the sepals of the I. tuba are NOT pointed but are round and blunt.  Incidentally the white sap of the I. alba and I. tuba might cause dermatitis and was used in the early rubber-making process. “Tuba” in Dead Latin means trumpet. Ipomoea macrantha (ma-cra-ANN-tha, large flowered)  not pictured, also looks similar to I. alba and can be used the same way as I. alba.

Ipomoea lacunosa, Whitestar Potato

Do you remember the first Ipomoea in this article, the I. pandurata, the Wild Potato Vine? The Whitestar Potato is similar except small white flowers and heartshaped leaves.  The cooked root of the Ipomoea lacunosa, was eaten by American Indians in central and eastern North America and California. Also consumed were the young roots of the Ipomoea leptophylla , boiled or roasted. Roots over three-years-old were not eaten. I. plummerae (which has grass-like leaves) was another cooked root food of the Amerindians.

Calystegia sepium, Hedge Bindweed

The Hedge Bindweed (Calystegia sepium) has small white flowers often without a red throat. It has triangle shaped leaves and climbs counter clockwise. The bindweed stalks, young shoots and root are edible cooked, green parts steamed or boiled, roots boiled. However, it can be purgative so regular eating of said is not recommended. The name is from the Greek kalyx (calyx) and stegon (cover), referring to the bracts that conceal the calyx, pronounced kal-ee-STEE-jee-uh or kal-ee-STEG-ee-uh.  Sepium, SEE-pee-um, of the hedges. The blossoms can also have a pinkish tinge.

Ipomoea violacea, Morning Glory

The Ipomoea violacea (vye-o-LAY-see-uh, violet) is a bit of a chameleon, it can range in color from white to blue under cultivation (aka Ipomoea tricolor) but in the wild it tends to be violet. It’s used the same way as the I. alba, that is young leaves and fleshy calyces are edible when cooked. They can be boiled or steamed. They can also be dried for later use.  Seeds edible when young, cooked. Raw leaves can be used like soap. This is the Morning Glory of drug culture fame. The raw seeds have a little amount of a crude form of LSD.

Ipomoea cairica, Mile a Minute Vine

 Ipomoea cairica, (KY-rik-uh, from Cairo) is naturalized from Africa. Called the Mile-A-Minute-Vine it has edible roots and stems though they are slightly bitter and both are slightly cyanogenetic.  Its flowers range from violet-purple to light pink to white with a pink  or red throat. The leaves while called ivy-like look more palm-like to me with deep lobes of five to seven. Roots were boiled, or, grated then roasted, no doubt to drive off the cyanide. The fruit of the I. cairica (holding the seeds) is used as a soap, just crushed against the skin and water applied. It creates a lather.  Animals known to eat the plant raw include giraffes, goats, rabbits, guinea-pigs, and pigs. It is apparently toxic to horses.

Ipomoea pes-caprae, Railroad Vine

Ipomoea pes-caprae (goat foot) or Railroad Vine, Beach Morning Glory and Goat’s Foot Morning Glory, is often found on the sandy seashore. Its cooked roots, stems and leaves can be eaten in small amounts as a famine food. It is extremely common and usually the only Morning Glory found along the eastern shore of Florida, literally on the beach. One of its claims to fame is that it can reach 100 feet long or more.

Ipomoea quamoclit, Cypress VIne

According to Kew Gardens also eaten are the cooked leaves of the Cypress Vine, Ipomoea quamoclit (KWAH-moe-klit, the Mexican name),  though they may make you sleepy and are cyanogenic. They definitely must be boiled. Leaves of the Ipomoea obscura (ob-SCUR-ah, dark) are eaten either in soups or as a cooked vegetable, and leaves of the Ipomoea involucrata are eaten cooked like a green. (in-vol-yoo-KRAY-ta, a reference to its bracts.)  Some subspecies are more forgiving on the gastrointestinal track. On the other side of the world the Ipomoea digitata (finger-like) has edible oblong tubers and leaves when cooked. It is not found in the Americas.

Ipomoea digitata, Vidhari Kand

There are several hundred species in the Morning Glory group and it is suspected that most of them have edible leaves and other parts. But don’t guess. Check out your local species with an expert.

Seeds of the I. tricolor, I. pandurata, I. nil, I. violacea and I. tuba have been used for their hallucinogenic properties. In the state of Louisiana the I. tuba became illegal in 2005 to cultivate for any purpose other than ornamental. A close relative of the Ipomoea is the Jicama, which has toxic seeds. All part of that plant above ground have high amounts of rotenone, a fish killer.

The genus name, Ipomoea, is mangled Greek via Dead Latin. Ipo is often said to come from Ips and means worm but that’s just linguistic illiteracy among botany professors. To say it means “worm” is stretching it. The basic word is Ipo which means below, beneath or under. Homoios is perverted via Dead Latin as well. The basic word in Greek is omoio not homoios. It means “similarity.”  Ipomoea means “resembling underground” as in the sprawl of a root, or perhaps the tunnels of a worm.  Batata is going to take some explaining:

When Columbus landed on Haiti the natives there, the Tainos (Arawaks) called the root “batatas” which literally means potato. The Spanish changed that to Patatas. When the Spanish later saw the white potato they called that Patatas as well. That changed in English to potato. So, the white potato was named after the Batatas and became potato but now in English we call Batatas the Sweet Potato. And worse, of course, is calling the Sweet Potato a yam, which it is not. Yams are from a totally different family, the Dioscorea.

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{ 23 comments… read them below or add one }

Brent January 17, 2017 at 12:17

Deane, regarding Ipomoea lacunosa, I am looking for information on how it was cooked by Native Americans. Have you consumed this root before? I see it mostly listed as an annual, which makes me think the roots are going to look more like a carrot than a sweet potato.


Camella November 1, 2016 at 10:58

Green Deane,
Hello. Here in Beaufort County SC a local botanist Daniel Payne with Naturescapes identified a lpomoea macrorhiza. It was in a food lion parking lot of all places. He said that the seed can often be overturned due to landscaping efforts and this one sprung up in a sporadically maintained parking area. I took photos of the day and the night. Thought you would want the pics. Thanks for your article. Will be glad to email them to you.


Green Deane November 4, 2016 at 16:13
Stephany September 25, 2016 at 21:13

I’m in Quebec, Canada, where the Ipomoea Alba Moonflower can only grow as an annual, but I’ve uprooted some of my stronger plants, full of buds, still attached to their little trellis, and wish to bring them indoors as an experiment to see how well they’ll do. My only concern is for my cats – I’m not finding anything definitive about whether or not they are poisonous to cats. Everything I’ve found about toxicity is for humans and lists the I. Alba as level 1 – skin irritant. Is the Ipomoea Alba safe for my beloved cats if they eat it?


Green Deane September 26, 2016 at 19:15

I have not read of any problems of that family with cats. The biggest danger with cats is Day Lilies. It is very toxic to them.


Stephany September 26, 2016 at 21:28

Thank you, Green Deane!


Paul September 24, 2016 at 19:42

For the Ipomoea lacunosa and leptophylla, is there a general rule for approximating the age of the root based on length?

How large are they typically at 2-3 years? (if anyone knows).



Angela September 16, 2016 at 23:40

Is Sweet Potato flower edible?


Green Deane September 18, 2016 at 22:03



Danny February 18, 2016 at 12:39

Do you have any insight on the edibility of field bindweed (Convolvulus arvensis)… I haven’t found much info out there to convince me, however it is invading my backyard….


Green Deane February 29, 2016 at 18:23

As far as I know it is not edible.


Charlotte December 28, 2015 at 12:01

So what about ornamental sweet potatoes, none of my suppliers list anything other than ipomea – is this what your saying as beware of hybrids, I have grown at least 6 different ones in my yard and end up throwing litterally buckets of this stuff into the compost pile every year. Are the leaves edible or does anybody know?


Rufus September 6, 2015 at 09:49

I love a forum that offers both botanical AND semantic minutia — my two favorite arenas for quibbleage! Plus plenty of information I have been desperate for. Thank you.
Funny: when traveling in Asia, I gamely eat what ever is set before me, enjoying the adventure (love that ipomea aquatica!) but back on home turf I am extremely cautious about what I pick and eat.
At least this attitude leads me to educate myself on this very engaging topic.


pat December 12, 2013 at 15:06

I have stuff growing up my fence and trees that has heart shaped leaves. It dies in the winter but comes back in the spring and climbs everywhere. I don’t see any flowers on it at all. Any ideas what it is? Just wondering if it will kill my rabbits.


audrie August 6, 2013 at 12:32

Thanks for a wonderful article. Moonflowers and sweet potatoes are going in next year. I have a terrible time with summer greens in the 100+ heat of North Central Texas. It is wonderful to find a solution.

I noticed that ipomoea purpurea is not mentioned. Is that because it is not edible?


Green Deane August 6, 2013 at 13:45

I do not have any reference to I. purpurea.


Jess September 16, 2015 at 12:44

Doesn’t say anything about edibility but here is a reference to I. purpurea which seems to be common in California

also mentions medicinal uses similar to other ipomoeas.

Interestingly they have popped up all on their own where my sweet potatoes are planted and seem to want to take over.


CeLia July 20, 2013 at 17:17

Ipomoea aquatica, Water Spinach
Stir fry with some garlic, season with salt… yummy. 🙂

To cook those sweet potato leaves, it is advisable to separate the leaves from stems. And peel stems by about 2 inches and make sure you kind pluck in a way that you could peel off a layer of the surrounding skin.

Wash the leaves in water and squeeze them. This will remove most of the sliminess and stir fry in garlic with a bit of Asian Fermented tofu (knows as Fu Yue) or grind some fresh chilies with some onions and some soaked dried prawns before tossing into some oil. Saute till fragrant and toss in the leaves and stems.

The other varieties listed above are not really available except for the Mile a Minute Vine and Railroad Vine. The latter seems to be found mainly by the side of our beach areas; facing the South China Sea or the Straits of Malacca. Not sure why….


Mary July 3, 2013 at 17:39

As a child we picked morning glory flowers and fed baskets full to the chickens. (I’m 52 now) They were blue with a white throat. I also think they had a heart shaped leaf if I remember right. They didn’t seem to hurt the chickens at all. Do you know what kind these could be?
Thank You


Tom May 21, 2013 at 13:26

The great French diplomat Talleyrand once observed that revenge is a dish best served cold. Nonetheless, I enjoyed mine served hot–with a squeeze of lemon and a little olive oil to be precise. My revenge in this case was against Hedge Bindweed (Calystegia sepium), which has long been choking parts of my garden and which I did not know was edible until I read this fascinating article. It is actually quite tasty as a pot herb, although it smells very unpromising when raw. I noticed nothing of the purgative effect you warn against from a single plateful, although I certainly take your warning seriously

I had to do a little homework first to determine that it was not field bindweed (Convolvulus arvensis) which I have seen listed as toxic to cattle on the reliable old Internet. But perhaps field bindweed is also edible? Thank you for this wonderful site.


Sue January 2, 2013 at 08:52

What about the commonly grown I. tricolor, such as Heavenly Blue? I love I. aquatica and would definitely throw Heavenly Blue in the skillet if it’s safe to do so.


Green Deane January 15, 2013 at 09:59

I don’t know. Be careful with hybrids.


name September 12, 2012 at 08:51

I. batatas is the one true potato. solanum of any variaty never will be. as far as the yam situation in the U.S. goes, if a sweet potato is labled as a yam, it is also labled sweet potato. could you imagine the law suit if someone allergic to sweet potatoes bought “yams”?


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