Ceropegia linearis subsp. woodii (Schltr.) H. Huber
Chain of Hearts, Collar of Hearts, String of Hearts (SOH), Rosary Plant, Rosary Vine, Hearts Entangled, Hearts-on-a-String, Sweetheart Vine, Heart Vine
Ceropegia linearis subsp. woodii, also known as Ceropegia woodii, is a trailing succulent with slender stems and heart-shaped leaves. The stems grow up to 13.1 feet (4 m) long. Leaves are green with white to gray and light purple markings on the upper surface and pink to light purple on the underside. Leaves are up to 0.8 inches (2 cm) long and nearly equal in width. With age, the plant develops a woody caudex at its base.
The flowers usually appear in late summer to early fall and last up to 6 weeks. They are pink, tubular with a small balloon-like base, and up to 0.8 inches (2 cm) long. The lobes at the apex are dark purple with purple hairs and form arch-like structures. Fruits are horn-shaped follicles that contain flat seeds with parachute-like tufts of white hairs.
USDA hardiness zones 11a to 11b: from 40 °F (+4.4 °C) to 50 °F (+10 °C).
How to Grow and Care
A gritty compost is suitable, and clay pots help with drainage, especially for the species with white thickened roots and for species forming large tubers. Ceropegias appreciate water and a little fertilizer during warm weather, although some watering care is required for the more difficult species. The vine-like species can suffer from prolonged drought.
Typically, many of these species grow and climb naturally among bushes, which provide shade and humidity to the base, while the vegetative growth is in the light. Where tubers occur, they are best planted on the compost's surface, and the vegetative growth is allowed to twine around supports or trail down from a hanging pot. The latter growth mode has the advantage of not using valuable bench space. Small tubers formed at joints in the thin stems of some species can be used for propagation. If the tuber rots or dries out, don't panic. As long as some of the top growth is still in reasonable condition, it may be possible to save the plant by re-rooting stems in damp gravel.
Learn more at How to Grow and Care for Ceropegia.
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