Adromischus filicaulis subsp. marlothii (Schönland) Toelken
Adromischus marlothii, Cotyledon marlothii
Adromischus filicaulis subsp. marlothii is a dwarf creeping succulent with bulbous green leaves arranged along reddish-brown prostrate stems from which they are easily detached. The leaves can become reddened in full sun and with immature foliage. They are up to 2 inches (5 cm) long and up to 0.4 inches (1 cm) in diameter at the center. The stems produce numerous aerial roots along their length, rooting down into the substrate where they touch. Flowers are long, and narrow, and have brownish-green cylindrical tubes with small pink corolla lobes flaring at the mouth.
USDA hardiness zones 10a to 11b: from 30 °F (−1.1 °C) to 50 °F (+10 °C).
How to Grow and Care
Many species are easy to grow in any free-draining, gritty compost. Their compact habit allows a collection to be maintained in a small space, and they grow well on any sunny window ledge or the top shelf of the greenhouse. Water mostly from spring to fall and let them dry out between waterings. Adromischus tolerates cool, frost-free conditions during the winter if kept dry. It is as well to keep water off the foliage during the winter. Mealybugs and vine weevils can be discouraged with a systemic insecticide.
Adromischus can be propagated from a single leaf, which should be placed against the side of the pot so that the stem end is just touching the compost. Some species drop their leaves easily, and although each leaf will form a new plant, it can be challenging to grow a large specimen. In other cases, leaves for propagation must be carefully detached with a sharp knife.
See more at How to Grow and Care for Adromischus.
This subspecies is native to South Africa (Namaqualand in the Northern Cape through the succulent Karoo and Little Karoo to arid parts of the Eastern Cape).
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