String of Hearts Care Guide — Canada
Rosary vine (Ceropegia woodii): heart-shaped leaves on long trailing stems, from southern Africa, and easy to kill with kindness.
String of hearts care is mostly restraint. This trailing plant from southern Africa stores water in its leaves, its stems and a swollen base, and the University of Wisconsin–Madison Extension says it tolerates dry soil much better than soggy soil and is easily killed by overwatering.
It is a cousin of the hoya, in the same dogbane family, and grows well in the same bright Canadian window. Give it strong light, very little water, and a cooler, drier rest in winter.
String of hearts at a glance: bright light, a west or south window; water only when the mix is dry; a cactus or succulent mix or extra perlite; winter rest with less water and no fertilizer, kept above about 15°C (60°F); propagate from the little tubers on the stems or from cuttings.
Light: What the Leaves Tell You
Wisconsin says string of hearts does well in a west or south facing window. In strong light the leaves are dark with clear silver marbling; in too little light they turn a pale, plain green. NC State Extension adds that large gaps between the leaves mean the plant is not getting enough light.
That makes it easy to read in a Canadian winter. If new growth comes in pale and widely spaced from November onward, move it to your brightest window. Too much sun, NC State notes, can scorch the leaves, so acclimatize it gradually if it goes outside for summer.
Watering and Mix
Use a well-drained mix such as a commercial cactus and succulent mix, or a houseplant mix with extra perlite, as Wisconsin recommends. Water deeply only when the mix is dry, and let the pot drain fully. NC State says overwatering causes root rot and yellow leaves, while wilted leaves mean it is too dry.
| Season | Water | Feed | Temperature |
|---|---|---|---|
| Spring–summer | When the mix is dry, then thoroughly | At most monthly, half strength | Normal room |
| Fall–winter | Less often again | None | Above about 15°C (60°F) |
The feeding guidance and the winter temperature come from Wisconsin, which says plants do best with a winter rest: reduce watering and do not fertilize. NC State also describes it as dormant in winter, with watering reduced even further.
Pot, Repotting and Hanging
Both extension services say string of hearts likes to be crowded, so repot only when you must, in spring before new growth starts. Its trailing stems suit a hanging pot or a high shelf, and NC State says they hang down about a metre indoors. They can also be trained on a small trellis.
Propagating from the Beads
Small tubers form along the stems at the leaf joints. Wisconsin says these can be planted to grow new vines: press a tuber, ideally still attached to the vine, into the soil of another pot, keep the mix moist but not wet, and cut it free once it has rooted, which can take a few weeks or months. NC State notes the tubers root on their own when a stem touches soil.
You can also root stem cuttings. Wisconsin says cuttings root best with bottom heat, which is useful in a cool Canadian house.
Pests and Problems
- Yellow leaves and soft stems: overwatering and root rot. Let it dry and cut back on water.
- Wilted, shrivelled leaves: too dry. Water thoroughly.
- Pale leaves, long gaps between them: not enough light.
- White cottony spots: mealybugs, which Wisconsin names as the main pest. NC State also lists aphids and scale.
Its relatives make good companions in the same window: the hoya care guide covers the wax plant, and the pilea care guide covers another easy, bright-window plant.
Pets
Neither the NC State nor the Wisconsin entry lists string of hearts as toxic. We could not check it against the ASPCA list from here, so keep the trailing stems out of reach of pets that chew plants.
Frequently Asked Questions
How often should I water string of hearts?
Only when the mix is dry, then water deeply and let it drain. Water less again in winter. It is easily killed by overwatering.
Why are my string of hearts leaves pale and far apart?
Not enough light. In strong light the leaves are darker with silver marbling and grow closer together. Move it to a west or south window.
How do I propagate string of hearts?
Press one of the small tubers on the stems into a pot of mix, keep it moist but not wet, and cut it from the parent once it roots. Stem cuttings also work and root best with bottom heat.
Does string of hearts need a winter rest?
Yes. Wisconsin says it does best with a winter rest: water less, do not fertilize, and keep it above about 15°C (60°F).
Is string of hearts related to hoya?
Yes. Both are in the dogbane family, Apocynaceae. String of hearts is in the milkweed subfamily, and its seed pods look like milkweed pods.
Can string of hearts go outside in summer in Canada?
Yes, once nights are warm, but bring it in before the first frost and introduce it to stronger light gradually to avoid sunburn.