Gasteria carinata var. glabra

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Since 4 Aug 2013

Gasteria carinata var. glabra (Salm-Dyck) van Jaarsv.
Cact. Succ. J. (Los Angeles) 70: 70 1998
Family: ALOACEAE

Synonyms:

Gasteria carinata var. glabra (Salm-Dyck) van Jaarsv.

Aloe glabra (Haw.) Salm-Dyck
Gasteria carinata f. glabra (Salm-Dyck) van Jaarsv.
Gasteria glabra Haw.

See all synonyms of Gasteria carinata

Subspecies, varieties, forms and cultivars of plants belonging to the Gasteria carinata group

Gasteria carinata (Mill.) Duval: (var. carinata) has a rosette habit of growth with a tuberculate leaves surface. This variety is the most common. Distribution: Western and southern portion of the range.
Gasteria carinata var. glabra (Salm-Dyck) van Jaarsv.: has smooth leaves. Distribution: Eastern portion of the distribution area of the species.
Gasteria carinata var. retusa van Jaarsv.
Gasteria carinata var. schweickerdtiana (Poelln.) hort.: Has has pale smooth leaves which are ditichous in young rosettes, very similar if not the same as: Gasteria carinata var. glabra.
Gasteria carinata var. thunbergii (N.E.Br.) van Jaarsv.
Gasteria carinata f. variegata hort.: (variegated form) has dark-green leaves stripped logitudinally with yellow.
Gasteria carinata var. verrucosa (Mill.) van Jaarsv.: has has a distichous habit of growth with dark grey-green leaves with a densely tuberculate surface.

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Bibliography: Major references and further lectures
1) Van Jaarsveld, E.J. 1994. "Gasterias of South Africa" Fernwood Press.
2) Urs Eggli “Illustrated Handbook of Succulent Plants: Monocotyledons” Springer, 2001
3) W. Engelmann. “Das Pflanzenreich” 33: 50 1908
4) “Flowering plants of South Africa: A Magazine Containing Hand-coloured Figures with Descriptions of the Flowering Plants Indigenous to South Africa. London, Johannesburg and Cape Town” 8: pl. 291 (1928)
5) Stuart Max Walters “The European Garden Flora: Pteridophyta, Gymbospermae, Angiospermae-Monocotyledons” Cambridge University Press, 1984
6) Mucina, L. & Rutherford, M.C. (eds) 2006. “The vegetation of South Africa, Lesotho and Swaziland.” Strelitzia 19. South African National Biodiversity Institute, Pretoria.
7) Van Jaarsveld, E.J. 2007. "The genus Gasteria, a synoptic review." Aloe 44: 4: 84–103.

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Cultivation and Propagation: It is of easy culture and can grow on window sills, verandas and in miniature succulent gardens where it is happy to share its habitat with other smaller succulent plants, or in outdoor rockeries.
Growth rate: It is a relatively slow-growing plant that offsets to form in age small clusters.
Soil: It is tolerant of a wide range of soils and habitats, but prefers a very porous potting mix to increase drainage. You can grow a plant in a 10-15 cm pot for years and have perfectly happy plants. For best results, use a shallow pot.
Exposure: Need light shade to shade, but will take full sun part of the day. (with some sun exposure the leaf develops a nice reddish tint and remain compact)
Watering: During the hot summer months, the soil should be kept moist but not overly wet. During the winter months, water only when the soil becomes completely dry. Wet soil quickly causes root and stem rot, especially during chilly winter months. No water should ever be allowed to stand around the roots. Low ambient humidity is always needed.
Feeding: The plants are fertilized only once during the growing season with a balanced fertilizer diluted to ½ the recommended strength. Plants react well also to organic feeding (compost or any other liquid fertilizer).
Hardiness: During the winter months, water only when the soil becomes completely dry. Frost hardy to -1°C (Or less). It grows well in Mediterranean gardens where frost is not too severe.
Pest and diseases: Rot is only a minor problem with Gasteria if the plants are watered and “aired” correctly. If they are not, fungicides won't help all that much. Incorrect watering, poor drainage or too much shade can lead to attack by pests and diseases. Care must be given in watering, keeping them warm and wet while growing, and cooler and dry when dormant.
Remarks: Gasterias are best planted in a partially shaded and airy part of the greenhouse, and not too close to the glass roof or sides of the house as the plants can overheat during hot spells.
Propagation: Gasterias are easily propagated by the removal of offshoots or by leaf cuttings in spring or summer. To propagate by leaf cuttings, remove a leaf (best in spring) and let it lie for about one month, giving the wound time to heal. Then lay the leaf on its side with the basal part buried in the soil. This leaf should root within a month or two, and small plants will form at the leaf base. Cuttings are best rooted in clean sand. Once rooted, plants can be planted into individual containers. They can also grown from seed. Sow seed during spring or summer in a warm, shady position in a sandy, slightly acidic soil and keep moist. Cover with a thin layer of sand and keep moist. Germination is usually within 20 days. Seedlings grow slowly and are best planted out about a year after sowing. It is recommended to apply a fungicide when growing it from seed.

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