Very different and almost unrecognizable from the standard form of E horrida. A largish crest. You can also try to root it.

Euphorbia horrida f. inermis f. cristata, also known as the Crested African Milk Barrel, is a unique and visually striking cultivar within the diverse Euphorbiaceae family. This particular form combines the intriguing characteristics of being both spineless (inermis) and crested (cristata), making it a highly sought-after specimen for collectors and enthusiasts of unusual succulents.

Origin of Name

The genus name "Euphorbia" is attributed to Euphorbus, the Greek physician of King Juba II of Mauritania, who is said to have used a certain Euphorbian plant for medicinal purposes. The species name "horrida" translates to "rough" or "bristly" in Latin, describing the plant's typically spiny appearance, although the 'inermis' form is spineless. The term "cristata" refers to the crested or fan-shaped growth habit, where the plant's normal cylindrical growth is mutated into a fascinating, undulating form.

Technical Description of Plant

Euphorbia horrida f. inermis f. cristata is characterized by its unusual, crested growth pattern, which results in a wavy, fan-like structure. Unlike the standard Euphorbia horrida, which has sharp spines, this form is nearly or completely spineless, showcasing smooth, green to blue-green, photosynthetic stems. The crested form is a result of a mutation and can vary greatly in shape, size, and color, often exhibiting a somewhat glaucous hue. This cultivar rarely flowers, with its appeal lying primarily in its sculptural form and texture.

Origin of Plant

Euphorbia horrida is native to South Africa, where it grows in dry, rocky areas. The 'inermis' and 'cristata' forms are cultivars that have arisen through selective breeding and natural mutation, emphasizing specific desirable traits for ornamental purposes. These forms are more commonly found in cultivation than in the wild due to their unique appearance and collector interest.

Conservation Status

As a cultivated variety of a widespread species, Euphorbia horrida f. inermis f. cristata does not have a specific conservation status. However, the wild populations of Euphorbia species are subject to pressures from habitat loss and over-collection, highlighting the need for sustainable practices in cultivation and trade.

Care Instructions

Euphorbia horrida f. inermis f. cristata prefers bright, indirect light but can tolerate some direct sunlight. It requires a well-draining soil mix and should be watered sparingly, allowing the soil to dry out completely between waterings. Overwatering can lead to root rot, a common issue with succulents. During the winter, reduce watering to a minimum to mimic its natural dormant period. Protect from frost, as it is not cold-hardy. Handle with care, as the sap of Euphorbias is toxic and can cause skin irritation.

This crested Euphorbia offers a unique aesthetic for succulent collections, rock gardens, or as a standalone statement piece. Its care requirements are minimal, making it suitable for both novice and experienced succulent enthusiasts who wish to add an extraordinary and sculptural plant to their collection.