Tanquana PRISMATICA

Tanquana PRISMATICA - Tanquana prismatica.

Seed series 'Living Stones'.

VERY rare collector's plant!

Tanquana is a genus of miniature succulents in the family Aizoaceae, segregated from the genus Pleiospilos based on leaf shape and seed capsule structure: Tanquana has keelless leaves.

The genus is endemic to the Tanqua Karoo in the Cape Province of South Africa. In nature, the plants inhabit semi-desert quartzite fields where rain is rare, storing moisture from evening fogs in their leaves.

The plant consists of a pair of succulent spotted leaves, rounded or elongated, sitting without a stem. A transverse fissure runs between the leaves, and each season a new pair emerges from it, arranged perpendicular to the old one. The flowers are yellow, diurnal, and open in autumn.

Tanquana prismatica is a very rare miniature succulent from South Africa. It usually grows as a single pair of connate leaves of ovoid or globose shape, 3-4 cm (1.2-1.6 in) long and about 3 cm (1.2 in) wide, on a completely undeveloped stem.

The leaves are green with dark green dots, taking on a bronze tint under bright lighting. Flowering occurs in winter; flowers are yellow, multi-petaled, and open during the day.

Tanquana seeds are very small, dark, and light-sensitive: they germinate poorly in darkness. Soaking such tiny seeds is impractical, so the substrate itself is disinfected: before sowing, it is drenched with a weak solution of potassium permanganate and dried slightly. Scarification and stratification are not required.

Sowing is carried out superficially, without burying: seeds need light. A sterile fine-grained mineral substrate with a top layer of washed sand is used. The sowing is moistened from a spray bottle with a growth stimulant solution: SUPERthrive, HB-101, Aminozol, Epin, or Zircon, covered with a transparent lid or placed in a mini-greenhouse, and germinated under bright diffused light at a temperature of 18-24 °C (64-75 °F), without overheating under direct sun.

Under favorable conditions, the first shoots appear within a week, primary germination is completed in 2-3 weeks, and individual seeds may delay up to 4-6 weeks. The sowings are ventilated daily and condensation is removed: stagnant moisture is especially dangerous for aizoon seedlings. Pricking out is performed only after seedlings become noticeably stronger, with minimal damage to the roots.

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The plant needs the brightest possible location with bright diffused light and a few hours of soft direct sun. Both the plant's compactness and the bronze tint of the leaves depend on the lighting.

Active growth falls in the cool part of the year, while in summer heat the plant enters dormancy and is kept drier and cooler. With heat, weak light, and a moist substrate, the tissues stretch and become vulnerable to rot.

Watering is very cautious, in small portions, only after complete drying of the substrate. During the summer dormancy period, watering is sharply reduced. Water stagnation in the drip tray is impermissible; misting is not required.

The substrate needs to be very loose, poor, and mineral, with a high proportion of coarse sand, fine stone chips, and perlite. Drainage is laid at the bottom of the pot; the container is chosen shallow and necessarily with holes for water drainage.

Fertilizer is applied rarely, only during the active growth period, with a weak solution of cactus and succulent fertilizer low in nitrogen.

Repotting is performed at the beginning of the growth period, after which the plant is kept without watering for several days. Only completely dried remains of old leaves are removed.