Euphorbia FEROX

Euphorbia FEROX - Fierce Spurge, Euphorbia ferox.

Euphorbia is a genus of succulent and non-succulent plants in the spurge family (Euphorbiaceae), comprising about 2000 species growing in tropical and subtropical regions across all continents, and characterized by high adaptability to diverse climatic conditions and growth forms - from herbs to trees and shrubs.

Members of the genus have thickened, fleshy, often ribbed stems, sometimes with spines, which store water, making them resistant to drought and irregular watering. The plants vary greatly in appearance: herbs, shrubs, trees, and cactus-like forms, with the presence of milky sap, which often contains toxic substances, serving as a common feature. Leaves can be large or reduced, simple or lobed, often shedding during the dry season.

Small and inconspicuous flowers are clustered in specialized inflorescences - cyathia, surrounded by bracts often mistaken for petals. Fruits are three-celled capsules containing rounded or ovoid seeds.

Many species reach large sizes in the wild; however, most euphorbias are well adapted to indoor cultivation and are valued for their ornamental appeal, original forms, and hardiness.

Fierce spurge is a small, spiny, succulent shrubby plant branching from the base, with rounded clusters up to 60 cm (24 in) in diameter. The stem is green, columnar, covered with spines, resembling an ear of green corn covered with spines. The ribs are linear, with small transverse constrictions. Leaves are tiny. Spines are solitary, numerous, spaced 6 mm (0.24 in) apart, sturdy, thick, sharp, 1-6 cm (0.4-2.4 in) long, changing from reddish to purple and ultimately gray.

Seeds are sown on the surface or with slight burying, not more than 2 mm (0.08 in), in a loose sand-peat substrate. Sowing containers are moistened with a spray bottle, placed in a propagator or covered with plastic wrap, and kept at a temperature of 21-25 °C (70-77 °F) in light, but not under direct sun. It is necessary to avoid overwatering and complete desiccation of sowings. To prevent prolonged condensation retention, the container is ventilated 1-2 times a day for 10-15 minutes.

Seedlings emerge within 12-25 days. The maximum germination period can exceed 40 days. When seedlings appear, the cover is gradually removed. Prick-potting is carried out after the appearance of 2-3 true leaves; the plants are potted into individual containers.

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It prefers bright lighting and sunny windowsills, but can also adapt to diffused light. Under sufficient light, stem coloration becomes richer and may acquire a yellowish tint. In partial shade, it develops slowly and loses its compact shape; the stems stretch out and lose their ornamental appeal.

In summer, the optimal maintenance temperature is 21-28 °C (70-82 °F), in winter - 15-18 °C (59-64 °F), not below 12 °C (54 °F). During cold periods, the plant requires a dormancy period. Watering is carried out moderately as the soil dries out. In winter, watering is reduced to a minimum, only to avoid complete desiccation of the substrate. Excess moisture causes rot.

It grows in light, breathable succulent soil consisting of equal parts sod soil, leaf mold, coarse sand, and charcoal. A drainage layer of expanded clay or gravel is mandatory. Repotting is carried out in spring once every 3-4 years, handling the root system with care. Fertilizer is applied in spring and summer 1-2 times using succulent fertilizers. Excess nitrogen is contraindicated - it leads to loss of ornamental quality and shoot stretching. Organic fertilizers improve tissue coloration and density.

Pruning is carried out sanitarily to remove damaged areas. Propagation is possible by seeds and cuttings that root after drying. Seeds produce good emergence when germination conditions are met; when working with cuttings, skin protection from milky sap is necessary.