Haworthia glauca


Catevala glauca
Haworthia reinwardtii var. glauca
Haworthiopsis glauca
Haworthia reinwardtii subsp. glauca


H. glauca is native to Cape Provinces where the plant grows in very well-drained sandy soil, either in direct sunlight, or under bushes.


H. glauca is a common succulent belonging to the Asphodelaceae botanical family. The plant grows solitary but in age can branch from the base and form clumps. The rosette can reach up to 8 cm in diameter. The stem is erect and densely packed with pointed leaves. The leaves are thick, lanceolate, triangular at the apex, curved inwards, glaucous green in color; the tips are darker and pointed. Blooming occurs from late spring to late summer. The flowers are tubular, small, whitish, borne at the apex of the stem. The inflorescence can reach up to 30 cm in height. The plant can turn on reddish hues during the rest period. The specific epithet “glauca” means “cerulean” and refers the color of the leaves. Haworthias generally resemble small aloes, but they differ in size and the distinctive inflorescence.


This is a slow growing plant, easy to cultivate. The plant needs a full light sun exposure but is recommended to avoid direct sun-light in the hottest periods. The plant does not like temperatures below 5°C so it needs to be placed indoors in the coldest periods. The soil should be mixed with pumice, clay and loam to allow the drainage and prevent the root rot, the plant is prone to it indeed. Remember to use a perforating pot to drain excess water. Watering can be done regularly in Spring and Summer: during the vegetative period you can water the plant (every 7 days), checking that the soil is completely dry before watering again; in winter you should stop the watering to allow the plant to enter dormancy. If you want a faster and lush growth you can fertilize the plant once a month during the growing season with the specific fertilizers for succulents; stop fertilizing throughout the winter. If the pot starts to be too small for the plant you can repot the plant in a pot 2 cm wider. Repotting should be done early in the growing season with fresh new potting soil. Be careful to red spiders and mealy bugs.


Propagation can be done by cutting or by seed. By cutting you can make the cut during the spring and then let the cutting dry; after a few days the cut surface will dry and a callus will form, then place the cutting in a mixture of sand, soil and pumice. To increase the success of propagation you can make two or more cuttings at the same time. For cuttings it is recommended temperatures around 20 °C. By seed it is very simple to propagate the plant, it is enough to sow the seed in a sandy loam soil and keep it with a high level of humidity and at temperature of 14 C°.


The name of this genus is a tribute to the botanist Adrian Hardy Haworth (1767-1833).

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