Ceropegia WOODII

Ceropegia WOODII - String of hearts, Chain of hearts, Rosary vine, Sweetheart vine, Wood's ceropegia.

Ceropegia is a large genus in the family Apocynaceae (subfamily Asclepiadoideae), comprising according to various classifications from 200 to more than 400 species of succulent-like perennials with twining, trailing, or erect shoots, distributed in subtropical and tropical regions of Africa, the Arabian Peninsula, South and Southeast Asia, the Canary Islands, and Australia. The genus belongs to the subfamily Asclepiadoideae and is closely related to stapelias. Most species inhabit shrub savannas, forest edges, and rocky slopes with good drainage, often climbing over shrubs and trees in search of support.

The leaves are opposite, simple, ranging from reduced to succulent and fleshy depending on the species. The roots are tuberous or thickened, accumulating moisture. Nodes capable of producing roots and giving rise to new shoots form on the stems of a number of species.

The flowers are tubular, with five petals fused at their tips - they form an umbrella-like dome, cage, or antenna-like appendages resembling fountains, parachutes, lanterns, or antennas in shape. Pollination is carried out by flies that are temporarily trapped inside the trap-flower. Within several months after successful pollination, fruits form - pairs of fused follicles with silky-pubescent seeds.

Ceropegia woodii is the most popular species grown at home. Externally, the plant is distinguished by slender, delicate sprouts with brownish and purple stems that hang in a dense network from the pot. Older leaves have a marbled coloration, being thin yet fleshy. The new leaves - light green or lilac - resemble beads strung on graceful branches.

The seeds are enclosed in paired horn-like follicles that open upon maturity. The seeds are flat, light brown, equipped with a silky tuft for wind dispersal. Before sowing, the seeds are rinsed in hot (50-60 °C / 122-140 °F) running water for a few minutes, then soaked in a 1% potassium permanganate solution for 1-2 hours. Additionally, growth stimulants can be used (SUPERthrive, HB-101, Aminozol, Epin, or Zircon). Stratification and scarification are not required.

Sowing is carried out in spring or summer into a loose, well-drained substrate: a mixture of cactus substrate with perlite or coarse sand. Seeds are buried to a depth of 2-3 mm (0.08-0.12 in) and moistened with a spray bottle. The crops are covered with film or placed in a mini-greenhouse and kept at a temperature of 20-25 °C (68-77 °F) in diffused light. The substrate is kept consistently moist; waterlogging is unacceptable. Daily ventilation is mandatory.

Seedlings appear in 14-30 days; the minimum period is about 7-10 days at optimal temperature, with the maximum possible being up to 4-5 weeks. After emergence, the cover is removed gradually, and the substrate is kept slightly moist. Pricking out is carried out after the formation of 2-3 pairs of true leaves - into individual small pots with cactus substrate while preserving the root ball.

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Ceropegia is grown in bright indirect or moderately bright light without direct midday sun. Practically year-round, the plant requires daylight of at least 12 hours. Placement near an east or west window is preferable; near a south window, additional shading is required; direct morning rays are acceptable. With a lack of light, flowering ceases and the stems stretch.

The optimal temperature during the period of active growth is 16-24 °C (61-75 °F). In winter, when kept in a cool location (around 15 °C / 59 °F), watering is reduced to a minimum - once every 3-4 weeks; at room temperature with supplementary lighting, the watering schedule remains the same as in the warm season. Below 5 °C (41 °F), the plant perishes. It does not tolerate frost. If temperatures remain high without supplementary lighting during the cold season, the stems become leggy and weak.

Watering during the period of active growth is moderate - the substrate dries out to 2/3 of its depth between waterings. Water used should be soft, settled, and not cold. After watering, excess water is drained from the drip tray - stagnant moisture at the roots leads to rot, while complete desiccation causes leaf drop. From late August to February, watering is restricted or completely suspended. Air humidity does not play a significant role; for hygiene purposes, the leaves are periodically wiped with a damp sponge or the plant is given a warm shower.

The substrate used is loose and well-drained: a mixture of humus, leaf mold, turf soil, coarse sand, and finely crushed charcoal in equal parts; adding pine bark and brick chips is acceptable. As an alternative, a ready-made cactus substrate with the addition of perlite or coarse sand (1/3 part) can be used. The pot is preferably shallow but wide - clay with drainage holes. The height of the drainage layer should be at least a quarter of the pot volume. Young plants are repotted annually, mature ones - once every 2-3 years by potting on while preserving the root ball. Fertilizers are applied once every 2 weeks during active growth with half-diluted liquid succulent fertilizer or universal plant food; young plants are not fertilized. During dormancy, no fertilizers are applied. Routine pruning is not required; if necessary, overgrown or damaged shoots are shortened; pinching stimulates branching.

Propagation by cuttings: at the start of the active growth period in spring, a cutting 5-10 cm (2-4 in) long with several nodes is taken, and the cut surface is dried for a few hours or 1-2 days. The cutting is rooted in a moist cactus substrate at a temperature of 22-25 °C (72-77 °F) and diffuse light; rooting occurs within 2-4 weeks. Water very sparingly until rooted.