Cephalophyllum PILLANSII

Cephalophyllum PILLANSII - Pillans's cephalophyllum, Cephalophyllum pillansii, Yellow horn-leaf, Yellow Ice Plant.

Cephalophyllum is a genus of perennial succulent plants in the ice plant family (Aizoaceae), comprising several dozen species distributed predominantly in the Cape Provinces of South Africa and in Namibia. Representatives of the genus occur in desert and dry shrub biomes, on sandy and stony soils, open slopes, and well-drained areas where plants receive bright sun and rapid drying after rains.

The plants develop as low mat-forming or tufted succulents with creeping, branching shoots. The leaves are fleshy, opposite, cylindrical, three-sided, or nearly rounded in cross-section, green, grayish-green, or bluish, sometimes with a waxy bloom. New pairs of leaves emerge from the fissure between the old ones, as in many members of the ice plant family (Aizoaceae).

Flowers in cephalophyllums are usually large for the size of the plant, multi-petaled, resembling bright daisies or ice flowers. They open during the day in good light and close in overcast weather or in the evening. Flower coloration can be yellow, orange, red, pink, purple, or whitish. After flowering, multi-locular capsules with small seeds are formed.

Pillans's cephalophyllum is a compact creeping succulent subshrub with fleshy gray-green leaves and bright yellow flowers. In nature, the species occurs in the western part of the Cape Provinces of South Africa, including the arid regions of Namaqualand, where it grows on sandy and loamy plains among granite or sandstone rocks. In cultivation, the plant is valued as a miniature groundcover succulent for sunny collections, rock compositions, and shallow containers.

The shoots are creeping or ascending, gradually forming low loose clumps. The leaves are opposite, elongated, fleshy, cylindrical at the base and three-sided closer to the apex, usually gray-green or glaucous, acquiring a reddish or purplish tint in bright sun. The leaf surface is smooth and dense, well adapted to dry air and intense lighting.

The flowers are large relative to the size of the plant, solitary or appearing in small clusters, bright yellow, with numerous narrow petals resembling small sunny daisies. Usually they open in good light and may close in cloudy weather and towards evening. The fruits are dry, capsule-like, with small seeds characteristic of many Aizoaceae members.

Horn-leaf seeds are small, brown, pear-shaped or irregularly shaped, forming in multi-locular capsules.

Sowing is performed superficially or almost superficially, without soaking. A sterile mineral sowing substrate based on fine peat, washed sand, fine gravel, and perlite is used. Seeds are distributed across the surface, lightly pressed down, and either left uncovered or dusted with a barely noticeable layer of sifted sand. The sowing is moistened from a spray bottle with a weak solution of potassium permanganate or biofungicide, if necessary with the addition of a growth stimulant: SUPERthrive, HB-101, Aminosol, Epin, or Zircon.

The container is covered with a transparent lid or placed in a propagator. Germination is conducted under bright diffused lighting, without direct sun or overheating, at a temperature of 20–25 °C (68–77 °F). Sowings are ventilated daily, condensation is wiped away, and the substrate surface is kept slightly moist, but not wet. For ice plants, it is especially important to avoid stagnant dampness with poor air movement.

The first sprouts may appear in 7-21 days, but germination can be prolonged and depends on temperature and humidity. After the emergence of seedlings, the cover is gradually opened, and seedlings are kept under bright diffused lighting with cautious moistening. Pricking out is carried out after the seedlings strengthen and begin forming fleshy leaves, when the plants are convenient to transplant with a small plug of substrate.

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For the horn-leaf, a very bright spot with direct morning or evening sun is used. South, southeast, and southwest windows are best suited, but in intense summer heat behind glass, light shading and ventilation may be required. With insufficient light, shoots stretch out, leaves become looser, and flowering weakens or fails to occur.

During the active growth period, a temperature of 18–28 °C (64–82 °F) is maintained; with good air movement, the plant tolerates brief heat. Wintering is preferred bright and cool, at 8–14 °C (46–57 °F), with very rare watering. In cold weather, it is important to prevent wet soil, as roots and shoot bases quickly suffer from dampness. Container plants cool down faster than plants in the ground, so winter dryness is especially important.

Watering is carried out sparingly, only after the soil has dried out thoroughly. In the warm season, the root ball is moistened moderately, but not left wet for long, and excess water from the drip tray must be drained after 15-20 minutes. During the cool dormant period, watering almost ceases and is performed only upon noticeable wrinkling of the leaves. Spraying is not required; air humidity is maintained at normal room level or dry.

Soil should be poor, loose, mineral, and fast-drying: ready-made mix for cacti and succulents, coarse sand, fine gravel, pumice, zeolite, brick chips, perlite, and a small amount of leaf mold. The mineral portion should constitute a significant share of the mix. A drainage layer must be placed at the bottom. Pots are chosen shallow and wide, with drainage holes, as the plant spreads sideways.

Repotting is carried out in spring, usually once every 3-4 years or after significant expansion of the clump. Careful potting-on is used, removing old, dried, or damaged shoots. After repotting, the plant is kept for several days without watering. Fertilizer is applied only during active growth once every 4-6 weeks with a weak solution of fertilizer for cacti and succulents with low nitrogen content. Excess nutrition causes loose watery growth and reduces resistance to rot.

Propagation in cultivation is possible by stem cuttings and division of an expanded clump. Cuttings are cut from mature shoots, dried for a few days, and planted into dry or barely moist mineral substrate. Initial waterings are carried out cautiously, only after rooting begins.