Crassula cotyledonis ‘Dubia’ | Hairy-leaved Crassula
€7,95
🌱 Morphology
Small perennial succulent with compact growth, featuring a basal rosette of fleshy leaves and a short stem that may become woody and branch slightly with age. The leaves are opposite, sessile, broad, and obovate, with both surfaces convex and covered in a characteristic pubescence formed by thick, recurved hairs. In the ‘Dubia’ clone, the leaves are especially thick and voluminous, reaching approximately 4.5 cm in length, 4.1 cm in width, and up to 1.2 cm in thickness, giving the plant a more compact and robust appearance than many forms of C. cotyledonis. The color ranges from grayish green to yellowish green. The hairs can take on more yellowish tones in southern and Namibian populations.
🌍 Distribution, habitat, and family
Family Crassulaceae. Crassula cotyledonis is distributed from southwestern Namibia to the Cape provinces of South Africa, including the Northern Cape, Western Cape, and Eastern Cape. It inhabits mainly stony and gravelly slopes, often near hill ridges and among rocky outcrops, frequently on south-facing exposures. The ‘Dubia’ clone comes from cultivated material and does not constitute an independent natural population. The old name Crassula dubia Schönland is currently a synonym for C. cotyledonis.
❄️ Temperature — USDA Zone 9b–11b
It tolerates low temperatures when dry and properly acclimatized. The combination of cold and wet substrate significantly increases the risk of root damage. It is recommended to keep the substrate dry during periods of near-freezing temperatures.
☀️ Lighting
Target guideline of 15–25 mol·m⁻²·day⁻¹ of PAR DLI during the growing season. Intense lighting promotes a compact habit and maintains the characteristic grayish-green coloration. A very bright exposure and progressive acclimatization to direct sun are recommended.
💧 Growth cycle and watering
It is a widely distributed species with ecological variation, so establishing a rigid dormancy period based solely on a calendar is not appropriate. Its activity is encouraged by moderate temperatures and water availability, always alternating abundant watering with the complete drying of the substrate. During periods of intense heat, it may slow down, and watering should be spaced out. In winter, if temperatures are low, it is recommended to significantly reduce water supply and keep it dry. The abundant foliar pubescence and compact growth are adaptations compatible with dry environments and high radiation.
🌸 Flowering
The inflorescence is an elongated thyrse, with numerous dense clusters of flowers. The peduncle can reach about 15–30 cm, exceptionally more. The flowers have a tubular to nearly cylindrical corolla, cream to pale yellow in color, with yellow anthers. In Spain, flowering can be expected approximately between May and August, depending on temperatures and the cultivation cycle.
🌿 Nutrition
During the active period, Desert CHOICE® Succulents is recommended, applied after watering and with the substrate previously hydrated. Before flowering, it can be supplemented with Desert CHOICE® Flowering.
This is an inimitable xerophytic plant grown in Madrid in a technical square pot and with the substrate activated with mycorrhizal fungi
S -> 9cm x 9cm
* As this is an online purchase, the appearance of the sent specimen may vary slightly from the product image. The measurements of the plant are specified in the photo description, but this may also vary slightly because, after all, it is a living being! Each of the plants at Desert CITY has unique characteristics.
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