Adromischus filicaulis (Eckl. & Zeyh.) C.A.Sm.
Adromischus filicaulis subsp. filicaulis, Adromischus fragilis, Adromischus fusiformis, Adromischus kleinioides, Adromischus mammillaris var. rubra, Cotyledon filicaulis, Cotyledon fusiformis
Adromischus filicaulis is a sparingly branched succulent with stems and usually shiny grey-green leaves with rust-colored spots and margins. It slowly grows up to 6 inches (15 cm) tall. Stems are thick, fleshy, grey-brown, up to 14 inches (35 cm) long, and up to 0.5 inches (1.3 cm) in diameter. They are erect or decumbent and rarely with stilt adventitious roots. Leaves are linear-elliptic, up to 3.2 inches (8 cm) long and up to 0.6 inches (1.5 cm) in diameter. Flowers are up to 0.5 inches (1.3 cm) long and appear on an up to 14 inches (35 cm) tall spike. The corolla tube is yellowish-green, tinged with pink, and the petals are broadly triangular, white or tinged pink.
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 a challenge 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 species is native to South Africa (Namaqualand, Sandveld).
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