Crassula

Crassula key facts

Growing Difficulty

Beginner-friendly

Lifespan

20+ years

Size

10cm-1m

Temperature

0〜35℃

Sunlight

Loves sunlight. Grows outdoors

Watering

2-3 times monthly. Drought-tolerant

Cold tolerance

About 0°C. Watch for frost

Pruning

Can be trained like bonsai

Notes

Gets top-heavy and may tip over as it grows

About Crassula

Crassula is a large genus in the family Crassulaceae, comprising more than 200 recognized species. Native primarily to South Africa and Namibia, these plants grow wild on rocky outcrops and sandy soils where rainfall is sparse. The genus name derives from the Latin word for "thick," a nod to the fleshy, water-storing leaves that are the genus's hallmark. The most celebrated species, Crassula ovata — the "money tree" — bears rounded, jade-green leaves with reddish margins and has long been treasured as a symbol of good fortune in many cultures. Growth is slow to moderate, yet well-tended specimens can live for more than two decades. Beyond ovata, the genus offers remarkable variety: the geometric stacked leaves of Crassula perforata, the sculptural blades of C. falcata, and numerous compact rosette forms beloved by collectors. Because Crassula tolerates drought and forgives the occasional missed watering, it is equally rewarding for beginners discovering succulents and experienced growers seeking architectural plants.

7 things to know before growing Crassula

1. 1Sunlight Comes First

   Crassula thrives with 4–6 or more hours of bright light daily, whether direct sun or strong indirect light. Insufficient light causes etiolation—stems stretch and become spindly, ruining the plant's compact shape. Indoors, a south-facing windowsill is the ideal spot.

2. 2Water Sparingly

   Since leaves store moisture, water only after the soil has completely dried out—roughly every 2–3 weeks in spring through autumn, and once a month in winter. Root rot is the leading cause of Crassula decline, and it is almost always caused by overwatering.

3. 3Use Well-Draining Soil

   A commercial cactus and succulent mix works well. Standard potting soil retains too much moisture and risks root rot; mixing in 20–30% perlite or coarse sand improves drainage considerably. Adding a layer of pumice or gravel at the pot's base further aids water flow.

4. 4Protect from Cold and Frost

   Most Crassula varieties are frost-sensitive and begin to suffer below 5°C (41°F). Frost exposure causes leaves and stems to rot, so bring plants indoors before temperatures drop. They still need light in winter, so a warm, bright windowsill remains the best location.

5. 5Fertilize Lightly

   A diluted liquid fertilizer applied once a month during the growing season (spring through autumn) is sufficient. Over-fertilizing promotes weak, stretched growth and can burn roots; use half to one-third of the recommended dose. Withhold fertilizer entirely during winter dormancy.

6. 6Easy to Propagate

   Crassula propagates easily from stem or leaf cuttings. Let the cut end dry for 2–3 days before inserting it into clean, dry soil, and hold back on watering until roots form. Spring and autumn offer the best success rates for propagation.

7. 7Size Varies by Variety

   Crassula species range enormously in size—from compact desktop varieties under 10 cm to C. ovata specimens exceeding 1 m outdoors. Check the mature size of your chosen variety before purchasing to ensure you have a suitable space. Repotting into a slightly larger container every 1–2 years helps prevent root-binding.

Frequently asked questions about Crassula

Q.Is the "money tree" the same as other Crassula plants?

A.The "money tree" is a common name for Crassula ovata, one species within the large Crassula genus of over 200 species. Other Crassula plants can look quite different and may have slightly different care requirements, so it is worth checking which species you have.

Q.Why are my Crassula leaves shriveling?

A.Shriveled leaves most often signal underwatering — water thoroughly and the leaves usually plump back up within a few days. However, root rot can cause identical symptoms, so if the soil has been consistently wet, unpot the plant and inspect the roots before watering again.

Q.Does Crassula flower, and how can I encourage blooming?

A.Crassula ovata can produce small star-shaped white to pale-pink flowers in autumn and winter. To encourage blooming, reduce watering in autumn and expose the plant to cooler night temperatures around 10°C (50°F) for several weeks. Young plants and those lacking sufficient light are less likely to flower.

Q.Is Crassula toxic to pets or children?

A.Crassula ovata is reported to be toxic to dogs and cats, potentially causing vomiting and lethargy if ingested. It is advisable to place the plant out of reach of pets and small children as a precaution.

Handy Growing Tools for Crassula

Learn more about Crassula in the encyclopedia

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