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A Sweetheart Succulent for Valentine’s Day

Variegated sweetheart vine (Ceropegia woodii ‘Variegata’). Photo: worldofsucculents.com

One of my favorite Valentine’s plant is the variegated sweetheart vine (Ceropegia woodii ‘Variegata’). It’s a succulent with delightful pairs of plump little heart-shaped leaves, purplish underneath, green and highly marbled with silver above, while the leaf edges are variegated creamy white and pink. I picked mine up years ago in local garden center and have been sharing cuttings ever since. 

And the heart-shaped leaves make it a perfect Valentine’s Day gift!

Variegated Sweetheart Vine in basket, trailing from pedestal.
The variegated sweetheart vine’s thin stems trail down from their pot. Photo: Aimi Mursyidah

The variegated sweetheart vine produces long, thin, dangling stems that will, if you grow the plant in a hanging basket, eventually reach the floor. However, I find this plant is much more attractive if you regularly cut back the longest stems, as that stimulates greater branching and denser growth, giving you a greater concentration of color nearer to the pot. It will also make a great ground cover plant, one you could grow as a living carpet in the pot of larger, upright succulent with similar needs, or in a dish garden. (No, it will not be happy in a terrarium other than in the short term: succulents never are.)

Potatolike tuber of Variegated Sweetheart Vine
Dangling potatoes? Nope, sweetheart vine tubers! Photo: Mercewiki, Wikimedia Commons

The variegated also produces a tuber at its base and also smaller ones along its stem. They look like dangling mini-potatoes! They’re actually edible and other species of Ceropegia with larger tubers are harvested from the wild for human consumption (C. bulbosa, notably), although mostly as a famine food. (May I suggest cooking before eating any to remove any bitterness). But sweetheart vine tubers are too small to be of much sustenance.

Curious lantern-shaped flower of Variegated Sweetheart Vine, pink with deep purple fuzzy top.
The lantern-shaped flowers are intriguing but small and modestly colored: they really don’t stand out. Photo: public.fotki.com

It also blooms and quite prolifically at that, mostly in summer and fall. The flowers are small and curious, said to look like a lantern, with a bulbous base and tube in pinkish purple and deep purple, nearly black, petals joined at the tip. They’re impressive when studied through a magnifying glass, but otherwise too small and too insipidly colored to really stand out.

What’s in a Name?

Two photos of variegated Sweetheart Vine
With its long, thin stems dripping straight down, you can easily see wheere this plant gets the names “string” and “chain” from. Photo: zielony-parapet.pl

This plant has more than its usual share of common names, most having to do with its heart-shaped leaves: not just sweetheart vine, but also chain of hearts, string of hearts, collar of hearts and hearts-on-a-string. It’s also called rosary vine for the little round brownish tubers found here and there along its stem. 

The botanical name Ceropegia was chosen by Carl Linnaeus and means “fountain of wax” (from the Greek kērós meaning wax and pēgḗ meaning fountain), which he felt described the flowers. (You had to have been there!) The epithet woodii honors the plant’s discoverer, John Medley Wood (1827–1915), curator of the Durban Botanic Gardens, who found it hanging from rocks on Groenberg Mountain in Natal, South Africa, at an altitude of 1800 feet (5,500 m). It also grows in Eswatini (formerly Swaziland) and Zimbabwe.

String-of-needles plant dripping down from pot and running over counter.
String-of-needles plant (C. linearis). Photo: spiderplantshop.co.uk

Its correct botanical name is now considered to be C. linearis woodii, meaning it is a subspecies of the string-of-needles plant (C. linearis), with, as you certainly guessed, as narrow, pointed leaves very unlike the heart-shaped ones of sweetheart vine.

The genus Ceropegia of the dogbane family (Apocynaceae) contains some 180 species of shrubs, herbaceous perennials and climbers, often with a tuber or rhizomes, most native to Africa, but some also to Asia and Australia.

Simple to Grow

The variegated sweetheart vine is a tough, no-nonsense plant that doesn’t need much babying. Unlike most succulents, that really need intense light if not full sun, sweetheart vine seems perfectly at home in both in sun and medium light. It won’t tolerate long periods soaking in water, but is otherwise very tolerant of negligent watering, as long as you let the growing mix dry out between waterings. As long as it’s grown in a pot with drainage holes using a well-drained potting mix (regular potting mix, cactus mix, etc.), it will probably do fine. You could literally not water it for 6 months and it would likely survive.

It’s definitely a tropical plant, though, and prefers temperatures above 50˚F (10˚C) at all times. Therefore, other than for a summer visit outdoors, it can be grown outside permanently only in the very mildest climates (USDA hardiness zones 10–12). 

It is highly tolerant of extreme heat and not bothered by dry air, so you can leave to bake in front of a hot sunny window if you so desire. 

You can fertilize it lightly during its main growing season, from late winter to mid-fall … or not at all. 

Variegated Sweetheart Vine trained up a trellis.
Variegated sweetheart vine trained up a trellis. Photo: succulents-australia-sales.com

Most people just let the plant dangle naturally from its pot, but you can also easily train it up a trellis or topiary form. It will not climb on its own: you’ll have to twist its stems around the support or uses ties or clips to hold them.

Tubers of Variegated Sweetheart Vine with stems and roots to be used as cuttings.
You can root sweetheart vine from tubers or cuttings. Photo: Mulhall’s, Omaha

The variegated sweetheart vine is very easy to multiply, either by cutting free a tuber or two, rooted or unrooted, to press into slightly moist potting mix or doing the same with a stem cutting, making sure at least one node is in contact with the soil. I’ve dropped pieces into envelopes and mailed them to friends with no special attention other than shipping in mild weather and they came through fine. You can also let a branch run into a neighboring pot where it will layer itself (root) and can then be cut free.

I rarely repot this plant. After 4 or 5 years, when I feel it is getting a bit too straggly, I just take cuttings and start a new one, avoiding the complications of repotting a plant with such long stems without getting them hopelessly tangled.

Problems

Theoretically, it could have mealybugs or scale insects, and like most succulents could suffer rot in wet conditions, but mine have never shown any sign of insects or disease, and I’ve grown the non-variegated version for almost 40 years. 

Long strands of Variegated Sweetheart Vine, towards the left, many stems have reverted to the original unvariegated form.
Much of this plant has reverted back to the non-variegated form. To keep it true to type, that part should be pruned off. Photo: succulentgrowingtips.com

What does happen, though, are reversions. Certain stems revert back to the non-variegated form (green leaves with silvery veins) and then they slowly start to take over. This is not an overwhelming problem—maybe a reversion or two a year on a well-established plant—, but do be aware that most plants will put out a reversion every now and think. So, just pinch or cut it off and let the variegated form dominate.

Likewise, sometimes entirely albino stems appear. Being without chlorophyll, they live at the expense of the mother plant and likewise can simply be clipped off.

Also, the flowers are quite messy: with a few dropping to the floor on a daily basis when bloom is heavy, driving my wife nuts. Fortunately, we now have a robot vacuum that has no trouble picking them up.

Where to Find a Variegated Sweetheart Vine?

Plants of Variegated Sweetheart Vine received by mail order.
Plenty of mail-order sources offer this plant … but at what price? Photo: madmansmaker, reddit.com

Given the huge popularity of succulents these days, expect variegated sweetheart vine to show up occasionally in local garden centers among their usual succulent shipments. If not, try the Internet, either a specialist succulent nursery or online marketplaces like Amazon and Etzy. Prices vary wildly (I saw one offered $99.99 on Etzy: that’s insane!), but you should not be paying a fortune for this easy-to-grow, easy-to-multiply plant: it really ought to be dirt cheap. 

Of course, once you have one, share cuttings with a friend! 

Regular Sweetheart Vine without variegated. Also, pink and purple lantern-shaped flowers.
The orignal form, Ceropegia linearis woodii, without variegation, is especially widely available. Photo: plantworld2.blogspot.com

If you can’t find the variegated form, at least regular sweetheart vine (C. linearis woodii), without the white and pink variegation, really is widely available. I know my local garden center carries it all the time. It’s nice enough and easy to grow, although I don’t find it has the charm of the variegated form to my eye.

Here’s a thought! Obtain a plant of variegated sweetheart vine this spring or summer, then take cuttings and prepare the perfect Valentine’s day gift for next year!

Variegated Sweetheart Vine with read Valentine's Day heart.
Happy Valentine’s Day! Photo: Moosetopenguin, reddit.co & Pngimg.com

Larry Hodgson is one of Canada’s best-known garden communicators. After studies at the University of Toronto and Laval University where he obtained his B.A. in modern languages in 1978, he succeeded in combining his language skills with his passion for gardening in a novel career as a garden writer and lecturer. He has notably been editor-in-chief of HousePlant Magazine, Fleurs, Plantes et Jardins, À Fleur de Pot and Houseplant Forum magazines and is currently the garden correspondent for Le Soleil and radio garden commentator for CKIA-FM Radio. He is a regular contributor to and horticultural consultant for Fleurs, Plantes, Jardins garden magazine and has written for many other garden publications in both the United States and Canada, including Canadian Gardening, Harrowsmith, Horticulture, Fine Gardening, Rebecca’s Garden and Organic Gardening. He also speaks frequently to horticultural groups throughout Canada and the U.S. His book credits include The Garden Lover’s Guide to Canada, Complete Guide to Houseplants, Making the Most of Shade, Perennials for Every Purpose, Annuals for Every Purpose, and Houseplants for Dummies, as well as nearly 50 other titles in English and French. He can be seen in Quebec on French-language television and was notably a regular collaborator for 7 years on the TV shows Fleurs et Jardins and Salut Bonjour Weekend. He is the President of the Garden Writers Association Foundation and the winner of the prestigious 2006 Garden Media Promoter Award offered by the Perennial Plant Association. An avid proponent of garden tourism, he has lead garden tours throughout Canada and to the gardens of over 30 countries over the last 30 years. He presently resides in Quebec City, Quebec.

1 comment on “A Sweetheart Succulent for Valentine’s Day

  1. Those tubers are weird. I had never seen them here, but the vines do not live outside here either.

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