A rubra lactea crest which is also showing monstrose growth. Turns red on stress.
Euphorbia lactea 'Crest Rubra Monstrose,' often referred to as the Coral Cactus, is a strikingly ornamental plant that combines the intriguing features of cresting (cristate form), a ruby-red or pink coloration ('Rubra'), and abnormal growth patterns (Monstrose). This cultivar is a result of meticulous selection and breeding, designed to highlight the most dramatic aspects of its morphology for the horticultural market.
Origin of Name
The genus "Euphorbia" is named after Euphorbus, the Greek physician to King Juba II of Numidia, who reportedly used a certain Euphorbia plant for medicinal purposes. The species name "lactea" refers to the milky white sap that the plant exudes when cut or damaged. "Crest Rubra" indicates the plant's crested growth form and red coloration, while "Monstrose" describes its unusual and irregular growth patterns.
Technical Description of Plant
Euphorbia lactea 'Crest Rubra Monstrose' is characterized by its wavy, fan-shaped, crested growth, which resembles coral in both form and color. The crests are typically a vibrant pink or red, set against green or variegated stems. Unlike the typical Euphorbia lactea, which grows in a more upright, tree-like form, this cultivar's growth is mutated to create a compact, undulating mass of crested tissue. It rarely flowers, with the primary appeal being its extraordinary foliage. The plant can reach sizes of up to 2 feet in height and width, depending on its age and growing conditions.
Origin of Plant
Euphorbia lactea is native to tropical Asia, particularly India and Sri Lanka, where it grows in dry, forested areas. The 'Crest Rubra Monstrose' cultivar, however, has been developed through selective breeding in cultivation, making it a product of horticultural innovation rather than a naturally occurring variety.
Conservation Status
As a cultivated variety, Euphorbia lactea 'Crest Rubra Monstrose' does not have a specific conservation status. However, the wild species from which it derives faces various threats in its natural habitat, underscoring the importance of responsible cultivation and trade in all Euphorbia species.
Care Instructions
This cultivar thrives in bright, indirect light but can tolerate some direct sunlight. It prefers well-draining soil and should be watered sparingly, allowing the soil to completely dry out between waterings. Overwatering can lead to root rot, a common issue with succulents. In the winter, reduce watering further to mimic its natural dormant period. It is not frost-tolerant and should be protected from temperatures below 50°F (10°C). When handling, wear gloves to protect against the toxic sap, which can cause irritation to skin and eyes.
Euphorbia lactea 'Crest Rubra Monstrose' is a stunning addition to any succulent collection, offering a splash of color and a unique form that can serve as a focal point in any arrangement or as a standalone specimen. Its care requirements are minimal, making it suitable for both novice and experienced gardeners looking to add an exotic touch to their indoor or outdoor spaces.
