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Haworthia retusa (Star Cactus)

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Scientific Name

Haworthia retusa (L.) Duval

Common Names

Star Cactus, Window Succulent

Synonyms

Aloe retusa, Apicra retusa, Catevala retusa, Haworthia fouchei, Haworthia geraldii, Haworthia multilineata, Haworthia retusa var. retusa, Haworthia solitaria, Kumaria spicata

Scientific Classification

Family: Asphodelaceae
Subfamily: Asphodeloideae
Tribe: Aloeae
Genus: Haworthia

Description

Haworthia retusa is a small, rosette-forming, succulent perennial up to 4 inches (10 cm) tall. The leaves are very thick, triangular, translucent, green in color, up to 3.1 inch (8 cm) long and up to 0.8 inch (2 cm) wide. Flowers are small, tubular and white in color, in racemes up to 20 inches (50 cm) tall and appear in late spring to summer.

Hardiness

USDA hardiness zones 9bto 11b: from 25 °F (−3.9 °C) to 50 °F (+10 °C).

How to Grow and Care

These succulents are not considered difficult houseplants to grow. If you can keep a pot of Aloe alive on a windowsill, chances are you can do the same with a dish of Haworthia. As with all succulents, the most dangerous situation is too much water. They should never be allowed to sit in water under any circumstances. At the same time, these decorative, little plants can be grown in interesting containers such as tea cups and even miniature baby shoes. If you’re given a Haworthia in such a container, make sure the container had adequate drainage.

Haworthias are small, usually remaining between 3  and 5 inches (7.5 cm and 12.5 cm)  in height, and relatively slow-growing. They are often grown in small clusters in wide, shallow dishes. Over time, clusters will naturally enlarge as the mother plant sends off small plantlets. When the cluster has outgrown its dish, repot in the spring or early summer into a new wide and shallow dish with fresh potting soil. This is also the time to take offsets for propagation.… – See more at: How to Grow and Care for Haworthia

Origin

Haworthia retusa is native to South Africa.

Subspecies, Varieties, Forms, Cultivars and Hybrids

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