Agave UTAHENSIS 'KAIBABENSIS'

Agave UTAHENSIS 'KAIBABENSIS' - Kaibab Utah agave, Utah agave 'Kaibabensis'.

Agave is a genus of evergreen perennial herbaceous plants in the Asparagus family (Asparagaceae), comprising about 300 species distributed in the Caribbean islands and arid regions of North, Central, and South America. No more than 50 species are common in cultivation.

Representatives of the genus form rosettes of fleshy leaves, often with prickly margins and sharp tips. Leaves can be broad or narrow, colored in gray-green, glaucous, or green shades, sometimes with variegated coloration. The stem is generally shortened. The plants are adapted to prolonged droughts, spreading outward with powerful roots, absorbing moisture from surface soil layers and storing it in the leaves.

Flowering occurs at 15-20 years of age, after which the plant dies. A tall peduncle emerges from the rosette of robust leaves, at the top of which an inflorescence in the form of a panicle or raceme is formed, usually yellow or cream in color. The fruits are capsules with flat seeds. After the seeds ripen, the aboveground parts of the mother plant die off, and offsets sprout from the rhizomes.

Kaibab Utah agave is a very slow-growing hardy cultivar with the largest solitary rosettes among representatives of the species, reaching 60 cm (24 in) in height and 90 cm (35 in) in width. Gray-green erect, rigid, deeply channeled leaves bear whimsical long papery spines at their tips. During flowering, it throws up a flower stalk up to 2.5 m (8.2 ft) in height with a cloud of tiny golden flowers. It grows on the Kaibab Plateau at an elevation of 2,700 m (8,860 ft), along the North Rim of the Grand Canyon (northern Arizona, along the Utah border).

Seeds are soaked for 2-3 hours in a fungicide solution, then sown to a depth of 0.5-1 cm (0.2-0.4 in) in a light loose substrate consisting of sand, peat, and perlite, and covered with a layer of soil. The sowing is moistened from a spray bottle, placed in a mini-greenhouse or covered with film, and germinated in light but not in direct sun at a temperature of 22-26 °C (72-79 °F). Sprouts require ventilation. Waterlogging and drying out of the sowings must be avoided.

Sprouts appear within 15-25 days. The maximum germination period can exceed 40 days. After 2-3 true leaves appear, pricking out is carried out into individual 6 cm (2.4 in) pots with a light substrate and drainage, and after a year into 8-9 cm (3.1-3.5 in) pots. Adult specimens are repotted once every 2-3 years.

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The plant can be grown indoors under good lighting. Placement on south or southwest-facing windows with maximum light access is preferred. In summer, keeping it on a balcony or in the garden with protection from rain is possible. Large specimens in winter are kept in a cool, bright, dry room. A temperature of 20-28 °C (68-82 °F) in summer and not below 10 °C (50 °F) in winter is maintained.

Watering is carried out moderately, only after the soil dries out. In winter, watering frequency is reduced. Waterlogging or water stagnation at the roots is not permitted. During the active growth period from March to August, special fertilizers for cacti and succulents with low nitrogen content are applied once every 4-6 weeks.

A loose, well-draining substrate with an admixture of sand, perlite, and fine gravel is used. Repotting is carried out once every 2-3 years or as needed. The root collar is not buried, and drainage is mandatory.

Shaping is not required. Propagation is carried out by seeds, offsets, and rhizome cuttings separated in spring or summer.