Crassula cotyledonis - Dubia

Morphological Characteristics

Crassula cotyledonis dubia is a member of the Crassulaceae family, known for its succulent attributes. This plant typically features thick, fleshy leaves that are arranged in a rosette pattern. The leaves are usually green with a slight bluish or silvery tinge and may have red edges if exposed to full sun. The shape of the leaves is broadly ovate with a rounded tip, often exhibiting a waxy or powdery coating which helps in water retention. This species may produce small, star-shaped white or pale pink flowers on erect or slightly leaning inflorescences during the growing season.

Growth Habits

Crassula cotyledonis dubia is a slow-growing succulent that prefers a stable environment. It thrives in mild climates and does not tolerate extreme cold or heat well, making it ideal for growing indoors in temperate regions. In its natural habitat, it tends to grow in rocky or sandy soils which provide excellent drainage.

Maintenance Points

1. Lighting: This plant prefers bright, indirect sunlight. While it can tolerate partial shade, too little light may lead to leggy growth and diminished leaf coloration. Direct sunlight can be beneficial but should be limited to avoid scorching the leaves.
2. Watering: As a succulent, Crassula cotyledonis dubia requires minimal watering. The soil should be allowed to dry out completely between waterings. Over-watering or allowing the plant to sit in water can lead to root rot.
3. Soil: A well-draining succulent or cactus mix is ideal, potentially enhanced with additional perlite or sand to improve drainage.
4. Temperature: It does best in temperatures between 15-25°C (59-77°F). Avoid exposure to temperatures below 10°C (50°F) to prevent cold damage.
5. Fertilization: Feed lightly with a succulent fertilizer during the growing season; however, too much fertilizer can harm the plant, so it should be done sparingly.

Reproduction Method

Crassula cotyledonis dubia can be propagated primarily through leaf cuttings and offsets. To propagate by leaf cuttings:

1. Gently twist a leaf from the stem. Ensure the leaf is intact and not damaged.
2. Let the leaf cutting dry for a few days until the cut end forms a callus.
3. Place the callused cutting on top of well-draining soil and water sparingly until roots appear.
4. Once rooted, the new plant can be treated as an established specimen.

Offsets, or small rosettes that form at the base of the plant, can be carefully removed and replanted in similar soil conditions to grow as new independent plants.

This detailed care and propagation guide should help you maintain and expand your collection of Crassula cotyledonis dubia successfully.