Trichodiadema marlothii L. Bolus
Trichodiadema marlothii is native to South Africa. It occurs around Swellendam in the Western Cape province.
Trichodiadema marlothii is a succulent shrublet with woody branches covered with cylindrical leaves with an apical diadem of brownish-white bristles. It can grow up to 1.6 inches (4 cm) tall, with branches racing up to 4.8 inches (12 cm) in length. The leaves are ascending, blue-green with a brownish tip, and measure up to 0.7 inches (1.7 cm) long and 0.25 inches (0.6 cm) in diameter.
From spring to fall, this plant produces pink daisy-like flowers that can reach up to 1.4 inches (3.5 cm) in diameter. The fruits are 6-locular capsules.
USDA hardiness zones 9b to 10b: from 25 °F (−3.9 °C) to 40 °F (+4.4 °C).
How to Grow and Care
Mesembs are mostly adapted to relatively predictable rainfall patterns rather than extreme drought and irregular rainfall. Total rainfall may be extremely low, but water is available at least seasonally or through fog and condensation. This leads to or allows plants that are not especially large and sometimes very small and affects the way they need to be treated in cultivation.
The care basics are simple: free-draining soil, plenty of sun and ventilation, and regular light watering in the right season. Yet the difficulties are endless, trying to adapt to the Mesembs' adaptability and follow their growth habits in your particular conditions.
These plants require a loam-based compost with extra drainage material such as horticultural grit or perlite. They all like good light conditions and plenty of ventilation.
Some are relatively cold-hardy and can even survive mild winters outside. Most will survive temperatures down to the freezing point. Some Mesembs begin to grow in the fall as the temperature drops and the days get shorter.
See more at How to Grow and Care for Mesembs.
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