How to grow and care for String of Hearts Ceropegia woodii

Updated Nov 2024

String of Heart, or Ceropegia woodii, is a charming hanging plant native to South Africa, Swaziland, and Zimbabwe. This captivating succulent is known for its distinctive dark green leaves, often adorned with variegated silver or purple markings, and sometimes displaying a mix of cream, pink, and green hues. Each heart-shaped leaf is intricately patterned, appearing almost too perfect to be real. The upper surface of the leaves showcases dark green marbled with silver, while the underside varies from green to purple.

As the delicate vines drape elegantly over the edges of pots and planters, they create a cascading display of green and purple tones that add a softening touch to any space. These vines can even be trained to climb up a small trellis or topiary frame, showing off this plant’s graceful growth and romantic charm. String of Hearts can reach about 3 to 9 feet long. Make sure you hang this plant somewhere high, so you witness how breathtaking it can be, especially when it starts to cascade out of the pot like a waterfall.

String of Hearts has become a popular gift choice due to its status as one of the most beautiful heart-shaped plants, with each symbolic leaf carrying a message of growing love and lasting care. Despite its delicate appearance, this plant is remarkably resilient. Its natural habitat of rocky outcrops and sparse vegetation has contributed to its adaptability. While it may not be the easiest plant to care for, String of Hearts can handle a bit of neglect, making it suitable for busy plant parents or those just beginning their indoor gardening journey.

Basic Infomation

Should we grow String of Hearts Indoors or Outdoors?

String of Hearts can be grown both indoors and outdoors, but choosing the best environment depends on your local climate and the plant’s specific care requirements. Indoors, String of Hearts thrives when placed in a spot that receives bright, indirect sunlight. A south or east-facing window is ideal, where it can enjoy filtered light for several hours a day without the risk of scorching. Indoor conditions offer the advantage of consistent temperature and humidity, supporting steady growth throughout the year. This makes it perfect for hanging baskets or high shelves, where its long vines can cascade gracefully and add a touch of whimsy to any space.

Outdoors, String of Hearts can be a stunning addition to patios or gardens, especially in USDA hardiness zones 10 to 12. For outdoor growth, it’s important to place the plant where it can receive at least 3 to 4 hours of bright, indirect sunlight with some shade during the afternoon. This balance helps prevent the delicate leaves from burning in the harsh midday sun. Additionally, protect your plant from strong winds and sudden temperature changes to avoid damage to their trailing stems and foliage. In cooler climates, it's best to grow  String of Hearts indoors or bring outdoor plants inside during fall and winter, as they are not frost-tolerant and can be damaged if temperatures drop below 50°F.

String of Hearts vs String of Arrows and String of Spades

String of Hearts	String of Arrows	String of Spades

String of Hearts, String of Arrows, and String of Spades are all members of the “String of Things” Ceropegia woodii family, but each has its own unique characteristics that set it apart. String of Hearts is well-known for its heart-shaped leaves, which are dark green with silver or purple variegation. In comparison, String of Arrows and String of Spades have different leaf shapes. String of Arrows features elongated, arrowhead-like leaves that create a more angular and structured look, very different from the soft curves of the heart-shaped foliage. Meanwhile, String of Spades has spade-shaped leaves, blending a pointed and rounded shape that closely resembles String of Hearts but with a sharper outline.

The subtle differences in foliage give the String of Hearts a delicate, romantic charm, while the String of Arrows and String of Spades have a bolder, more geometric aesthetic. These unique characteristics make each plant stand out on its own and create a beautiful, layered effect when displayed together.

Types of String of Heart

String of Hearts family includes several captivating variations that appeal to plant enthusiasts for their unique characteristics. Aside from the traditional String of Hearts, another popular variation is String of Hearts Silver Glory, which features rounder, more silver-toned leaves compared to the classic version. The silver sheen adds a subtle elegance that stands out while still retaining the charm of the heart-shaped foliage.

This variegation creates a vibrant display, making it an eye-catching addition to any collection. The soft, pastel colors of the variegated form add a whimsical touch that enhances the plant's romantic feel.

Beyond these variations, there are related species including String of Arrows and String of Spades. These varieties allow plant lovers to explore diverse beauty while enjoying the familiar trailing habit and delicate nature of the String of Hearts family.

Check out How to Distinguish 6 Different Kinds of “String of Hearts”

General Care

1. Light

String of Hearts thrives best in bright, indirect light. This level of light mimics the dappled sunlight it receives in its natural environment, where it grows among rocky outcrops. A spot near a south or east-facing window is ideal, where the plant can enjoy several hours of bright, filtered light. While it can tolerate some direct sunlight, especially in the morning when the rays are less intense, too much harsh afternoon sun can scorch the delicate, variegated leaves. Signs of insufficient light include leggy growth, where the vines become stretched, and the space between leaves increases. If natural light is limited, using a grow light that mimics sunlight can help maintain healthy growth. If grown outdoors, place it in a spot with filtered sunlight, for example under a balcony or a tree. This setup helps maintain the plant’s vibrant foliage and overall health while protecting it from sunburn and dehydration.

2. Watering

Give String of Hearts a good soak of water once a week or whenever the top 2 - 3 inches of the soil is completely dry during its growing season. 

Proper watering is crucial to prevent issues like root rot. String of Hearts prefers a soak-and-dry method, which means allowing the soil to dry out completely between waterings. Water thoroughly until water drains from the bottom of the pot, ensuring all roots receive moisture. Allow the top inch of soil to dry out before watering again. During the active growing season (spring and summer), watering may be needed more frequently, approximately once every one to two weeks, depending on the climate and humidity level. In fall and winter, when the plant enters dormancy, reduce watering significantly as the plant's water needs decrease. Overwatering can lead to soft, yellowing leaves, a sign of root rot, while underwatering can cause the leaves to shrivel and curl.

  The leaves of overwatered String of Hearts will most likely start to shed or turn yellow, brown, or black, and at the same time, will feel soft and mushy.

3. Soil and Fertilizer

Well-draining soil is essential for String of Hearts to thrive. A cactus or succulent mix, which often contains a combination of sand, perlite, and soil, works well to provide the necessary drainage and aeration. If using regular potting soil, amending it with sand or perlite can improve drainage. Fertilizing is needed sparingly, as too much can damage the roots or encourage rapid, weak growth. Use a diluted, balanced liquid fertilizer once a month during the growing season (spring through summer). Avoid fertilizing during the plant’s dormant period in the colder months. Over-fertilization can lead to salt buildup in the soil, which can cause leaf browning and damage the plant’s health.

4. Temperature and Humidity

String of Hearts prefers warm temperatures that reflect its native environment. Ideally, temperatures should range between 60°F and 80°F (15°C to 27°C). It is not frost-tolerant, so it must be kept indoors or brought inside when temperatures drop below 50°F (10°C). Exposure to cold drafts or frost can cause damage to the leaves and stems, sometimes leading to dieback. Typical household humidity levels of 40-50% are sufficient for this plant, as it can adapt to drier conditions. However, it appreciates moderate humidity and will benefit from being placed in a room with consistent moisture, such as a kitchen or bathroom. If the air is too dry, especially during winter when indoor heating can lower humidity, placing a small humidifier nearby or using a pebble tray can help maintain moisture.

5. Toxicity

String of Hearts is generally considered non-toxic to both humans and pets. That said, while the plant is not classified as highly poisonous, it’s still best to exercise caution. If ingested in large amounts, the plant material could potentially cause mild stomach upset, such as nausea or vomiting. This reaction is generally not severe but could be uncomfortable, particularly for smaller pets or children. To minimize risk, it’s a good idea to keep the plant out of reach of pets and young kids, especially those prone to exploring with their mouths.

Extra Care

1. Potting and Repotting

When first potting your String of Hearts, select a container with drainage holes to prevent water from sitting at the bottom and causing root rot. A terracotta pot is an excellent choice because it allows excess moisture to evaporate more effectively, helping the soil dry out between waterings. The best soil mix for potting and repotting should be well-draining, such as a commercial cactus or succulent mix. If using regular potting soil, enhance its drainage by mixing in coarse sand, perlite, or pumice. This helps replicate String of Hearts’ natural habitat, which has rocky, fast-draining soil.

Repotting is typically needed every 2-3 years or when the plant becomes root-bound. Signs that it may need repotting include roots growing out of the drainage holes, soil that dries out extremely quickly, or a noticeable reduction in growth. The new pot should be only slightly larger than the previous one; too much extra space can lead to water retention and increased risk of root rot. After repotting, wait a few days before watering to allow your plant some time to adjust. Avoid fertilizing for at least a month post-repotting to let the roots settle. 

2. Pruning

Pruning String of Hearts is an important part of its care routine and helps maintain its shape, encourage fuller growth, and promote overall plant health. Pruning may also be necessary to remove dead or damaged vines and leaves.

Pruning can make your String of Hearts fuller and bushier.

The best time to prune your String of Hearts is during its active growing season, typically in the spring or summer. This timing allows the plant to recover quickly and encourages new growth. Pruning in the fall or winter, when the plant enters dormancy, should be minimal, as the plant’s energy levels are lower, making recovery slower. When pruning, use a pair of clean, sharp scissors or pruning shears to make clean cuts at the base of the stem or just above a node. This helps prevent damage to the plant and reduces the risk of infection or disease. 

3. Blooming

Blooming typically occurs during late summer to early fall, though the timing can vary based on environmental conditions and the plant’s overall health. The flowers of the String of Hearts are small, tubular, and often appear in shades of pink or purple. They have a delicate, elongated shape with a distinct bulbous base and a flared top, sometimes featuring a darker maroon or magenta color. Once flowers appear, they can last for several weeks, adding a touch of whimsy to the cascading vinesFor your String of Hearts to bloom, it requires optimal growing conditions. Ensuring the plant receives ample bright, indirect light and a period of cooler temperatures.

4. Propagation

There are 3 ways to propagate String of Hearts: cutting propagation (in soil or water), tuber propagation, and the butterfly method. 

Cutting propagation is the most versatile and starts with selecting healthy vines and making a clean cut just below a node. For soil propagation, allow the cutting to callous for a day or two before planting in a well-draining soil mix with the node slightly buried; for water propagation, submerge the node in water, keeping the leaves above the surface and changing the water every few days to prevent stagnation. Once roots develop to about an inch long, water-propagated cuttings can be transferred to soil.

Tuber propagation makes use of the small nodules that naturally form along the vines. These bead-like structures store nutrients and water, making them excellent for growing new plants. Carefully detach a tuber with a small section of vine and plant it lightly under the soil surface in a well-draining mix. With minimal watering and bright, indirect light, roots should develop within a few weeks, followed by new growth emerging from the tuber.

The butterfly method is another reliable technique for creating multiple new plants. This involves cutting a long vine into smaller sections, each with a node and a pair of leaves that resemble butterfly wings. After allowing the cuttings to callous for a day or two, place them on top of the soil with the nodes touching the surface. This method is particularly useful for filling out a pot and encouraging a denser growth habit. Light watering and bright, indirect light will support root development and new plant formation.

To get detailed information, be sure to grab our free printable to see what problems you might face while propagating succulents.

Seasonal Care

Seasonal care is crucial for keeping your String of Hearts healthy during fall and winter. As temperatures drop, insulate or move outdoor plants indoors if they are exposed to temperatures below 50°F, as they are not frost-tolerant. Indoors, place the plant near a bright window to ensure it continues to receive enough indirect light. If natural light is scarce, use a grow light to maintain brightness.

During the colder months, the plant’s growth slows due to dormancy, so reduce watering significantly. Allow the soil to dry out more thoroughly between waterings, only hydrating when the top few inches are completely dry. This prevents overwatering and root rot, as the plant requires less moisture during dormancy. Keep the plant away from cold drafts and avoid placing it too close to direct heat sources like radiators, which can dry out the leaves. Don’t forget to acclimate your String of hearts slowly when spring comes. Do not expose it to direct sunlight right away. 

Common Problems

String of Hearts is relatively low-maintenance but can encounter several common problems. Overwatering is one of the main issues and can result in root rot, leading to yellowing, mushy leaves and potentially fatal damage if not corrected. Underwatering, on the other hand, can cause the leaves to shrivel, curl, or dry out. Frost damage is another concern; this plant is not frost-tolerant and exposure to temperatures below 50°F can lead to leaf and stem damage or even plant death.

Insufficient light is a common cause of etiolated, leggy growth, where vines become stretched, and leaf production is sparse. Too much direct sunlight, however, can scorch the delicate leaves, leading to discoloration and leaf damage. Curling leaves can indicate a range of issues, from underwatering to temperature stress. Pests like spider mites and aphids can occasionally infest the plant, causing damage such as yellowing or discolored spots on the foliage and stunted growth. 

Q&A

Q: What pots or planters are suitable for String of Hearts?
A: String of Hearts thrives best in pots with drainage holes to prevent water buildup and root rot. Hanging planters are ideal for showcasing the plant’s long, cascading vines, allowing them to drape down beautifully and create an eye-catching display. Floating shelves or planters can also highlight the plant’s trailing habit and add a decorative touch to any space.

Q: How to make String of Hearts fuller?
A: To make your String of Hearts fuller, prune the longer vines and replant the cuttings back into the same pot. This encourages new growth at the base and results in a bushier appearance. Regular pruning also stimulates more branching along the existing vines.

Q: How to know if your String of Hearts is underwatered or overwatered?
A: If your String of Hearts is underwatered, the leaves will shrivel, curl, or appear dry. In contrast, overwatering leads to yellowing, mushy leaves and root rot. Check the soil moisture to diagnose the issue: if it feels dry several inches down, the plant may need water, but if it's still wet, hold off on watering.

Q: Why are my String of Hearts leaves losing color?
A: Leaves losing color can be due to insufficient light, causing them to fade and the plant to become leggy. Ensure your plant receives bright, indirect sunlight. Another possible cause could be nutrient deficiencies, so consider a light, balanced fertilizer during the growing season.

Q: Can I propagate String of Hearts from single leaves?
A: While it is possible to propagate String of Hearts from single leaves, it is not the most effective method. Single leaves may root but often don’t produce new vines. Propagating from stem cuttings with nodes is a more reliable approach for growing full, trailing plants.

Q: How to train String of Hearts to grow on a trellis or frame?
A: To train your String of Hearts on a trellis or frame, gently weave or wrap the vines around the structure, securing them loosely with plant ties or clips to hold them in place without damaging the stems. Start by positioning the main vines at the base and gradually guiding them upward as they grow, periodically adjusting and securing new growth. 

Q: Why are the leaves of my String of Hearts curling?
A: Curling leaves can be a sign of underwatering, as the plant conserves moisture, or overwatering, which can cause root rot. Temperature stress and low humidity can also lead to curling. Adjust your watering routine and check light and humidity levels to resolve the issue.

Succulents Box's Tips:

• Use a fan to improve airflow around your String of Hearts, which helps prevent pests and promotes healthier growth.
• Place cuttings back into the same pot to create a fuller, more lush appearance and encourage new growth.
• Display the plant on a floating shelf or high surface to let the vines spill over the edge for a dramatic, cascading effect.
• Drape mini string lights around the vines to add a festive, decorative touch that enhances its visual appeal.
• Combine String of Hearts with other trailing plants and succulents for a unique, layered display that adds depth and interest to your space.

Where to buy String of Hearts online?

If you’re looking to buy a String of Hearts online, Succulents Box is one of the top sources for succulents and houseplants in the U.S., supported by our own greenhouses in California. Our collection features the classic String of Hearts as well as unique varieties like the Variegated String of Hearts and String of Hearts Silver Glory. We also offer a wide range of trailing succulents that pair beautifully with the String of Hearts, perfect for creating an eye-catching display. Visit Succulents Box to explore our selection and find the perfect plant to enhance your indoor or outdoor garden.

Watch the video below (and subscribe to our YouTube channel for more great videos) to see easy tips to care for a String of Hearts.

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