Euphorbia resinifera, commonly known as the Moroccan Mound or Resin Spurge, is a striking succulent native to the slopes of the Atlas Mountains in Morocco. Its architectural form and ease of care make it a popular choice for gardens and collections worldwide.

Origin of Name

The genus "Euphorbia" is named after Euphorbus, the Greek physician to the king of Mauritania, while "resinifera" translates to "resin-bearing" in Latin, referring to the plant's copious production of a thick, resinous sap. This sap has been historically used for various medicinal purposes, most notably as a powerful analgesic.

Technical Description of Plant

Euphorbia resinifera forms a low, spreading mound that can reach up to 2 feet in height and several feet in width. It is composed of densely packed, quadrangular (four-sided) stems that resemble a green, angular cushion. The stems are ridged with small, paired spines along the edges, giving it a formidable appearance. This plant is highly adapted to arid environments, with its thick, fleshy stems storing water to survive long periods of drought. It blooms with small, inconspicuous yellow flowers in the spring, though the plant is primarily grown for its sculptural form rather than its floral display.

Origin of Plant

Euphorbia resinifera is endemic to Morocco, thriving on the rocky slopes of the Atlas Mountains. Its natural habitat is harsh and arid, which has led to the plant's remarkable adaptations for water storage and conservation. The resin produced by this plant has been valued for centuries, both for its medicinal properties and as a waterproofing agent.

Conservation Status

While not currently listed as endangered, the natural habitats of Euphorbia resinifera are under threat from overgrazing, agricultural expansion, and climate change. Sustainable cultivation and trade are essential to conserving this species and its native ecosystem.

Care Instructions

Euphorbia resinifera is well-suited to cultivation in arid, well-drained soils and is best grown in full sun to partial shade. It requires minimal watering, with the soil allowed to dry out completely between waterings. Overwatering can lead to root rot, so careful water management is crucial. It is relatively cold-hardy for a succulent, tolerating temperatures down to about 25°F (-4°C), but it should be protected from frost to prevent damage. When handling Euphorbia resinifera, it's important to wear gloves and protect your eyes, as the sap is toxic and can cause skin and eye irritation.

Euphorbia resinifera is an excellent choice for xeriscaped gardens, rockeries, and as a striking container plant. Its unique appearance and low maintenance requirements make it a fascinating addition to any succulent collection or drought-tolerant landscape design.