A detailed guide to the latest growing methods for the String of Hearts

The String of Hearts is also known as the Heart Vine, Rosary Vine, Wax Flower, and One-Inch Heart, among other names. It is a succulent plant in the genus Ceropegia of the family Apocynaceae, native to South Africa and Zimbabwe. Its leaf shape and color are quite attractive and it has some ornamental value. As a potted plant it can be placed beside a TV or computer, and it can also be planted indoors to absorb substances such as formaldehyde and purify the air. Now let us take a look at how to grow the String of Hearts!

Growth habits of the String of Hearts

The String of Hearts is a very drought-tolerant plant. Its suitable growing temperature is 15-25°C, but it can also tolerate the high temperatures of 35°C in summer and the low temperatures of around 10°C in winter, showing strong adaptability to temperature. It likes diffused light and avoids direct strong light. It does not like fertilizer, and especially avoids high-phosphorus and high-potassium fertilizers. Because its roots have large tubers, it can store nutrients and water.

Propagation methods of the String of Hearts

1. Cuttage propagation: Cuttage is the most commonly used propagation method for the String of Hearts. Generally, a stem section with more than 2 nodes is cut from the plant as a cutting. The cutting is placed in a ventilated place for about 10 minutes until the exuded liquid dries, and then the cutting is inserted into the prepared growing medium. It is then covered with plastic film to increase air humidity and speed up rooting. Under suitable temperature conditions, it can root in 2-3 weeks. When the roots grow to 2-3 cm, repot and transplant.

2. Bulbil propagation: Bulbil propagation is similar to cuttage propagation, except that the cutting carries a bulbil. This method roots more easily than cuttage propagation and has a higher survival rate, but the production of bulbils requires a certain plant age and sufficient nutrition. In home cultivation, bulbils are rarely produced.

3. Air layering propagation: For air layering propagation, generally choose robust growing branches, lay them flat on the growing medium, pierce a small wound at the node with a needle, then fix the node in the medium with a thin wire bent into a “u” shape, cover with a small amount of medium, and maintain humidity. After about 3 weeks, the node can be seen swelling and growing new roots. When the roots grow to 2-3 cm long, cut off this rooted stem section and transplant it.

Growing methods for the String of Hearts

1. Flower pot: For growing the String of Hearts, it is recommended to use a ceramic pot. Ceramic pots have a certain breathability. Clay pots lose water too quickly, while plastic pots retain water too strongly and have poor breathability.

2. Soil mix: Choose a growing medium with good drainage. You can use 7 parts succulent-specific soil that is easily bought at flower markets, 2 parts coarse sand, and 1 part perlite. Such a growing medium contains a certain amount of nutrients and can ensure good water permeability and breathability.

3. Environment: The growing temperature of the String of Hearts is 15-25°C. Spring and summer are the vigorous growing seasons. In winter, the temperature must not be lower than 10°C, as it is easy to freeze the leaves and tubers, causing the plant to die. If conditions permit, place the plant in a ventilated outdoor spot and move it indoors in winter. Of course, it can also be kept year-round on an indoor balcony; just open the windows regularly for ventilation.

4. Light: Grow the String of Hearts in a spot with diffused light and avoid direct strong light, especially in summer, when strong light can easily scorch the leaf surface and thus affect the plant's growth. In spring, autumn, and winter, it can receive about two hours of morning light each day. In summer, diffused light is enough. If the growing environment is too shady for a long time and light is insufficient, the internodes tend to become leggy and lose ornamental value.

5. Fertilization: The String of Hearts does not need much fertilizer. Apply compound fertilizer three to four times a year (apply thin fertilizer frequently). When repotting, add some base fertilizer as appropriate depending on the size of the pot, and repot once every two years.

6. Watering: Each time you water, you must wait until the potting soil is dry before watering. Use the pot-weighing method: when the flower pot feels light, you can water. The String of Hearts has strong drought resistance and water storage capacity. If you notice that the plant stops growing in winter, it indicates that it has entered dormancy. At this time, do not water or water less.

7. Diseases: The String of Hearts has strong disease resistance. Generally, if there is no external infection by pests and diseases during cultivation, pest and disease problems rarely occur. It is only necessary in daily cultivation to regulate the environment and avoid external infection by pests and diseases.

Precautions for growing the String of Hearts

1. In the daily care of the String of Hearts, pay attention to controlling the temperature well. In summer, take cooling measures, and in winter, protect it from the cold. When growing the String of Hearts in northern regions, it must be moved indoors to overwinter in winter.

2. The String of Hearts has large tubers that can store a large amount of water. When watering the String of Hearts normally, follow “water when dry, stop when wet.” Never let the soil remain overly wet for a long time, otherwise it is easy to cause tuber rot and even the death of the String of Hearts plant.