Faucaria tuberculosa (Rolfe) Schwantes
Pebbled Tiger Jaws, Tiger Jaws, Knobby Tiger Jaws, Shark's Jaws
Faucaria felina subsp. tuberculosa, Mesembryanthemum tuberculosum
Faucaria tuberculosa, also known as Faucaria felina subsp. tuberculosa, is a clump-forming succulent with triangular leaves arranged in opposite pairs. The leaves are dark green with whitish dots and rough white tubercles scattered over the upper surface. They are up to 1 inch (2,5 cm) long, up to 0.8 inches (2 cm) wide, and edged with soft white teeth. Flowers are yellow, daisy-like, up to 1.6 inches (4 cm) in diameter, and appear from fall to spring. They open around noon and close in the late afternoon.
This species is very similar to and often confused with Faucaria tigrina. It can be identified by the tubercles on the leaves, which are unique in the genus.
USDA hardiness zones 9b to 11b: from 25 °F (−3.9 °C) to 50 °F (+10 °C).
How to Grow and Care
The various species make excellent pot subjects and have been cultivated in Europe for over 300 years. Some species, such as Faucaria tigrina, are quite hardy, while others can be prone to stem rot.
Faucarias are mostly spring and fall growers. They need good drainage, but with a bit of shade, they will do just fine even with extreme heat, although they do stop growing then and need water every few days. When they lack water, like many other mesembs, the stems die, and some rosettes are not connected to the roots by any living tissue. When found in time, the rosettes can be used as cuttings and kept in the shade in a barely moist medium until the temperature cools down in the fall.
They bloom for several months in the fall or the beginning of winter. The flowers open around midday and close in the late afternoon. They often don't open if the weather is cloudy or if they are in the shade.
See more at How to Grow and Care for Faucaria.
This species is native to South Africa (Cape Province).
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