The Curio herreanus, known as String of Raindrops or String of Teardrops, is a popular succulent. Its distinctive appearance features plump, tear-shaped leaves strung along cascading stems. These leaves are typically green, sometimes displaying dark green or purple stripes, and possess translucent “windows” that allow light to penetrate for photosynthesis. Its trailing growth habit makes it an excellent choice for hanging baskets or elevated displays.
Caring for Your String of Raindrops
Light Requirements
String of Raindrops thrives in bright, indirect light. Placing it near an east or west-facing window provides ample light without harsh direct sun. Direct afternoon sunlight can scorch its leaves. Insufficient light leads to leggy growth, where stems become stretched and “raindrops” are sparsely spaced, and the leaves may lose vibrant coloration. Ensure light reaches the plant’s crown for even growth.
Watering Practices
As a succulent, String of Raindrops stores water in its fleshy leaves, making it drought-tolerant. Use the “soak and dry” method: allow the soil to dry out completely between waterings. Assess soil dryness by feeling the top few inches or waiting until leaves appear slightly deflated or soft. When watering, thoroughly saturate the soil, allowing excess water to drain. Overwatering is a common pitfall, leading to root rot, which can quickly harm the plant, while consistent underwatering causes leaves to shrivel.
Ideal Soil Mix
A well-draining soil mix is paramount for the health of your String of Raindrops, preventing waterlogging and promoting healthy root development. A specialized succulent or cactus potting mix is suitable. Enhance drainage and aeration by amending standard potting soil with materials like perlite, pumice, or coarse sand. The plant’s shallow root system is susceptible to rot if left in consistently wet conditions.
Temperature and Humidity
String of Raindrops prefers average indoor temperatures, thriving between 68°F and 82°F (20-28°C). Prolonged exposure below 50°F (10°C) can cause stress. During hot periods above 86°F (30°C), the plant may enter dormancy, requiring less water and fertilizer. It adapts well to typical household humidity levels and does not prefer overly humid environments.
Fertilizing Your Plant
Fertilize String of Raindrops during its active growing season (spring and summer) to support vigorous growth. A balanced liquid fertilizer diluted to half strength applied once a month is sufficient. Fertilize sparingly, reducing or ceasing fertilization during cooler, dormant months.
Propagating String of Raindrops
Propagating String of Raindrops is achieved through stem cuttings. Select healthy stems, cutting sections a few inches long that include several “raindrops” or nodes. Allow the cut ends to “callus” over for a day or two; this drying period helps prevent rot when cuttings are introduced to soil or water.
Once callused, root cuttings in a few ways. Lay stems on top of moist, well-draining succulent soil, ensuring nodes contact the soil. Alternatively, insert the cut end of the stem directly into the soil. Cuttings can also be placed in a jar of water, ensuring no leaves are submerged; roots typically develop within a few weeks. Maintain consistent moisture in the soil for cuttings until roots are established.
Addressing Common Problems
Leaves Wrinkling or Shrivelling
Wrinkled or shriveled String of Raindrops leaves often signal underwatering. The plant uses stored water, causing leaves to lose plumpness and become soft. To remedy, thoroughly water the plant and adjust your watering schedule to prevent extended dry periods. Overwatering can also cause shriveling by damaging roots, impairing water absorption.
Yellowing Leaves
Yellowing String of Raindrops leaves are a sign of overwatering or poor drainage. Excessive moisture leads to root rot, preventing nutrient absorption and causing discoloration. Allow the soil to dry completely before the next watering. Consider repotting into a fresh, well-draining mix if the current soil is compacted. Nutrient deficiencies can also contribute to yellowing.
Pests
String of Raindrops can encounter common houseplant pests such as mealybugs or spider mites. These pests feed on plant sap. Regular inspection helps detect infestations early. Prompt treatment with solutions like insecticidal soap or neem oil can manage these issues.