Dinteranthus microspermus (Dinter & Derenb.) Schwantes
Stone Plant, Living Stone, Green Stone Plant
Dinteranthus microspermus is a small, stemless, usually solitary or few branched succulent. It has only pairs of boat-shaped leaves that are reddish-grey-green to grey-violet and up to 1 inch (2.5 cm) long. The solitary flowers are many-petaled, yellow or whitish, and often tipped with red. Fruits are a 6 to 10 locular capsule with broad valve wings.
USDA hardiness zone 10a to 11b: from 30 °F (−1.1 °C) to 50 °F (+10 °C).
How to Grow and Care
Adult plants of this genus behave like Lithops. Summer expansion leading to flowering in fall, followed by a slow transfer of resources in winter; the main difference is that the presence of two active leaf-pairs is not unusual in some Dinteranthus.
Dinteranthus require slightly less water than do most Lithops. Excellent drainage is essential. Their nutritive requirements are amazingly modest, and the root systems of even the healthiest plants are minuscule. What they need most critically is good light, which will give them a bone-white aspect. Older long-stemmed plants can and usually should be turned into cuttings and re-rooted.
The real trouble with Dinteranthus is that the seedlings are so tiny that they are apt to damp off. But if the following rules are observed, success is likely. Sow in high summer; use sterilized soil with extra grit and enough peat to ensure high acidity; do not cover the seeds. See more at How to Grow and Care for Dinteranthus.
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