What is a string of hearts?
String of hearts (Ceropegia woodii) is a semi-succulent trailing vine from southern Africa, named for its small, heart-shaped leaves that hang on hair-thin, purplish stems. The upper leaf surface is dark green with silver marbling; the underside is a pale dusty pink. Mature plants develop small, tuberous lumps (pseudobulbils) along the stems that are used for propagation. It’s a collector favourite for hanging planters, window ledges, and shelving where the long cascading chains can be appreciated.
How much light does a string of hearts need?
String of hearts thrives in bright, indirect light — ideally right next to a window with a sheer curtain, or a few feet from an unobstructed south- or west-facing pane. In good light the silver marbling on the leaves stays crisp, the stem colour stays deep purple, and the internode spacing stays tight. In lower light the plant stretches: leaves get smaller, gaps between them widen, and the silver pattern fades toward plain green. A few hours of gentle morning sun is fine; direct afternoon sun will bleach and wither the thin leaves fast.
How often should you water a string of hearts?
This is a semi-succulent, so it stores water in its leaves and tubers — let the soil dry out completely between waterings, then water thoroughly. In warm months that usually means every 2–3 weeks; in winter you can stretch to once a month. The quickest way to kill a string of hearts is to keep it even slightly moist: mushy stems at the base or near the soil surface are the first sign of root rot. If the leaves look slightly soft and wrinkled, it’s thirsty — water it and they’ll plump up within a day.
How do you propagate a string of hearts?
There are three methods, all easy:
- Coil and pin. Lay a few stems loosely on the surface of moist potting mix in a small pot, pin the nodes to the soil with a hairpin or bent paperclip, and mist every few days. Roots form at every pinned node in 3–4 weeks.
- Water propagation. Snip 3–4 node stem sections, strip the bottom node of its leaf, and stand the cutting in a few centimetres of water. Roots appear in 1–2 weeks; pot up once they’re a centimetre long.
- Pseudobulbils. Mature stems develop small, round aerial tubers at the nodes. Harvest these, press them lightly onto moist succulent mix, and they’ll sprout roots and shoots within a few weeks.
Why are my string of hearts leaves pale and far apart?
Both are light deficiency symptoms. The pale or washed-out marbling means there isn’t enough light for the plant to express its pigmentation, and the wide spacing between leaves (etiolation) means it’s stretching toward the nearest light source. Move the plant to a brighter spot — directly in front of a window is ideal — and trim back the leggy stems to a node. The new growth will come in tighter and much better coloured.
Is string of hearts safe for pets?
Ceropegia woodii is considered non-toxic to cats, dogs, and humans. It is not listed on the ASPCA toxic-plants database and appears on the California Poison Control System’s non-toxic list. It is a pet-safe choice for households with curious animals, though it is still sensible to keep trailing chains out of reach to protect the plant from being chewed.