Crassula congesta Care (Thimble Jade / Watch Chain Crassula)

Thimble Jade (Crassula congesta)
  • plant family: succulent
  • plant native: South Africa
  • Toxicity: No
  • Flower Color: Star-shaped, white, or pale pink flowers on slender stalks.

The appearance of Crassula congesta

Crassula congesta is a compact, mat-forming succulent with a unique growth habit. It features fleshy, cylindrical leaves that tightly overlap each other along the stem, resembling a chain or a string of beads. The leaves are typically green or gray-green in color and can develop red or purple tinges when exposed to bright sunlight or cool temperatures. The plant grows to about 4-6 inches (10-15 centimeters) and spreads to form dense clusters. During the flowering season, it produces small, star-shaped, white or pale pink flowers on slender stalks.

Watch Chain Crassula Bloom Time

Crassula congesta typically blooms during the spring and summer months. The exact timing of flowering can vary depending on the specific growing conditions and the plant’s maturity.

Watch Chain Crassula Growing Conditions

Crassula congesta is well-suited for outdoor cultivation in mild to warm climates. Here are some key factors to consider when growing this succulent:

Sun Exposure & Light

Provide Crassula congesta with bright, indirect sunlight or partial shade. While it can tolerate some direct sunlight, it is best to avoid intense midday sun, as it may scorch the leaves. Indoors, place it near a south-facing window or provide supplemental grow lights.

Soil Type

Use well-draining soil for Crassula congesta. A mixture of regular potting soil, sand, and perlite works well. Good drainage is crucial to prevent waterlogged conditions leading to root rot.


Allow the soil to dry out between waterings. Water the plant thoroughly when the top inch (2.5 centimeters) of soil feels dry, and ensure excess water drains away. Like most succulents, Crassula congesta is drought-tolerant and prefers to be slightly under-watered rather than over-watered.

Temperature and Humidity

This succulent prefers moderate temperatures between 60°F and 80°F (15°C to 27°C). It can tolerate slightly cooler or warmer conditions but should be protected from frost. Avoid exposing it to extreme temperature fluctuations. This succulent can tolerate average indoor humidity levels. A drier climate and low humidity are ideal conditions for it.


Fertilization is not typically necessary for Crassula congesta, as it can thrive in nutrient-poor soil. However, if desired, you can apply a diluted, balanced fertilizer formulated for succulents during the active growing season (spring and summer). Follow the package instructions and avoid over-fertilization.

Common Pests

Crassula congesta is generally a hardy succulent not prone to severe pest infestations. However, like other plants, it can occasionally be affected by certain pests such as Mealybugs or Aphids.

How to Propagate Crassula congesta?

Crassula congesta can be propagated through stem cuttings. Allow the cuttings to callus over for a few days before planting them in well-draining soil. Keep the soil slightly moist until new roots develop.

Thimble Jade (Crassula congesta)

How to Potting and Repotting Crassula congesta?

When potting or repotting Crassula congesta, here are some guidelines to follow:

  1. Pot selection: Choose a pot with drainage holes to ensure proper drainage and prevent waterlogged conditions. The pot size should be appropriate for the size of the plant, allowing some room for growth but not excessively large.
  2. Potting mix: Use a well-draining succulent or cactus potting mix. Alternatively, you can blend regular potting soil with coarse sand or perlite to improve drainage.
  3. Repotting frequency: Crassula congesta generally does not require frequent repotting. Repotting every 2-3 years or when the plant has outgrown its current pot is typically sufficient.
  4. Repotting process:
    • Water the plant a day or two before repotting to ensure the soil is moist but not overly wet.
    • Gently remove the plant from its current pot, not damaging the roots.
    • Inspect the roots and remove any dead or rotten parts.
    • Place a layer of fresh potting mix in the new pot, creating a mound in the center.
    • Position the plant in the center of the pot and carefully spread out the roots.
    • Fill the remaining space with potting mix, ensuring the plant is held securely but not buried too deeply. Leave some distance between the soil surface and the pot’s rim for watering.
    • Gently press the soil around the base of the plant to secure it.
    • Water lightly after repotting and wait a few days before resuming regular watering to allow the roots to adjust.
  5. Aftercare:
    • Place the newly repotted Crassula congesta in a location with adequate light, following the earlier care guidelines.
    • Avoid watering immediately after repotting to prevent overwatering and promote healthy root development.
    • Regularly water once the plant has settled in its new pot and the soil, has mostly dried out.
    • Monitor the plant for signs of stress or root rot, and adjust the watering frequency accordingly.

Remember, Crassula congesta is a relatively slow-growing plant, so repotting is not often necessary unless the plant becomes root-bound or starts to outgrow its current container. It’s important to be gentle during repotting to avoid damaging the delicate roots.

How to Grow From Seed Watch Chain Crassula?

Growing Crassula congesta from seeds can be an exciting and rewarding process. Here are the steps to follow:

  1. Obtain seeds: Purchase Crassula congesta seeds from a reputable source. Alternatively, if you have a mature plant, you can collect seeds from its flowers. Allow the flowers to dry on the plant, and collect the seeds once they have matured and turned brown.
  2. Prepare the planting medium: Fill a seed tray or small pots with a well-draining succulent or cactus potting mix. Ensure that the mixture is moist but not saturated.
  3. Sow the seeds: Sprinkle the Crassula congesta seeds evenly over the surface of the planting medium. Do not bury them too deeply, as they require light to germinate. Gently press the seeds into the soil, ensuring good seed-to-soil contact.
  4. Provide the right environment: Place the seed tray or pots in a warm and brightly lit location, but avoid direct sunlight, as it can scorch the tender seedlings. The ideal temperature for germination is around 70-75°F (21-24°C).
  5. Maintain moisture: Cover the seed tray or pots with a clear plastic dome or wrap to create a mini greenhouse effect. This helps to retain moisture and create a humid environment. Check the moisture level regularly and mist the surface with water to keep it slightly moist.
  6. Germination and growth: Crassula congesta seeds typically germinate within a few weeks to a few months, depending on the conditions. Once the seedlings emerge, remove the plastic cover to allow air circulation and prevent excessive moisture buildup. Continue to provide bright but indirect light and maintain a moderate moisture level in the soil.
  7. Transplanting: Once the seedlings have developed a few sets of true leaves and are large enough to handle, they can be transplanted into individual pots. Use a well-draining succulent or cactus potting mix, and take the seedlings gently to avoid damaging the roots.
  8. Care for young plants: Place the young Crassula congesta plants in a location with bright, indirect light. Water them sparingly, allowing the soil to dry out between waterings to prevent overwatering and root rot. As the plants grow, follow the earlier care guidelines for mature Crassula congesta.

Growing Crassula congesta from seeds requires patience, as germination can be slow. Providing consistent care and suitable growing conditions will help ensure the success of your seedlings.


Hey, My name is Liat and I am addicted to house plants! I have at home more than 50 different types of plants of all kinds - succulents, cactus, tropical plants, orchids and more! Feel free to share the blog with friends on social networks.

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