Euphorbia SPANNRINGII

Euphorbia SPANNRINGII - Spannring's spurge, Euphorbia spannringii, 'Fishbone' spurge, Fishbone Euphorbia.

Euphorbia is a genus of succulent and non-succulent plants in the Euphorbiaceae family, comprising about 2,000 species growing in tropical and subtropical regions across all continents, characterized by high adaptation to diverse climatic conditions and growth forms - from herbs to trees and shrubs.

Representatives of the genus have thickened, fleshy, often ribbed stems, sometimes with spines that accumulate water, making them resistant to drought and irregular watering. Plants vary greatly in appearance: herbs, shrubs, trees, cactus-like forms; the common feature is the presence of milky latex, which often contains toxic substances. Leaves can be large or reduced, simple or lobed, often falling in the dry season.

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

Many species in nature reach large sizes, yet most euphorbias are well adapted for indoor growing and are valued for their ornamental appeal, original forms, and endurance.

Spannring's spurge is a low-growing succulent with a tuberous thickened base and short shoots forming compact cushions. Stems are covered with tubercles and sparse spines, with leaves absent or reduced. The surface is green or glaucous, with a distinct patterned scarring.

Flowers are small, yellow, gathered in small inflorescences located at the shoot tips. Flowering occurs in spring or early summer, and the fruits are small dry capsules containing rounded seeds.

Seeds are sown on the surface or with light burying, no more than 2 mm (0.08 in), into a loose sandy-peat substrate. Sowings are moistened with a spray bottle, placed in a mini-greenhouse or covered with film, and kept at a temperature of 21-25 °C (70-77 °F) in light, but not under direct sun. It is necessary to avoid waterlogging and complete drying out of the sowings. To prevent prolonged condensation retention, the container is ventilated 1-2 times a day for 10-15 minutes.

Seedlings appear within 12-25 days. The maximum germination period can be greater than 40 days. When seedlings appear, the cover is gradually removed. Pricking out is carried out after the appearance of 2-3 true leaves, and plants are potted into individual pots.

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It prefers bright lighting and sunny windowsills, but can also adapt to diffused light. Under sufficient lighting, stem coloration becomes richer and can acquire a yellowish tint. In partial shade, it develops slowly and loses its compact shape, with stems stretching and losing ornamental value.

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

It grows in a light, breathable soil for succulents consisting of equal parts sod, 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, with care for the root system. Fertilizers are applied 1-2 times in spring and summer with succulent fertilizers. An excess of nitrogen is contraindicated - it leads to loss of ornamental quality and shoot elongation. Organic fertilizers improve color and tissue density.

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