Few plants stop people mid-scroll like string of pearls — those cascading strands of little green spheres spilling over a pot look almost unreal. It's a genuinely gorgeous trailing succulent, and while it has a reputation for being tricky, the "trouble" comes down to two things people get wrong: not enough light and too much water. Fix those and it's far easier than its diva reputation suggests.
#Meet string of pearls
String of pearls (Curio rowleyanus, formerly Senecio rowleyanus) is a trailing succulent from southwest Africa. Each "pearl" is a specially adapted leaf: a little sphere that stores water, with a translucent stripe that lets light in while minimising water loss under harsh sun. Understanding that it's a sun-loving, drought-adapted succulent explains its whole care — and why treating it like a leafy tropical kills it.
#Light: the make-or-break factor
String of pearls needs lots of bright light:
- Best: very bright, indirect light, or a little gentle direct sun — right at a bright window.
- Too little light is the #1 reason it declines: strands go leggy and bare, the top thins out, and growth stalls.
If your plant is growing sparse strands with big gaps between pearls, it needs more light before anything else. A bright windowsill or a grow light makes all the difference.
#Watering: the #2 factor
Like all succulents, string of pearls wants to dry out between waterings, but its delicate strands make watering feel fiddly. The method:
- Water thoroughly only when the soil is nearly dry, then let it dry again — often about every 2 weeks in the growing season and much less in winter.
- Soak the soil, not the strands, and drain fully.
- Read the pearls: plump and firm = happy; shrivelled and deflated = thirsty (soak it); mushy, translucent, yellowing = overwatered and rotting (stop watering).
Overwatering is the classic killer — see indoor succulent care and overwatering vs underwatering.
#Soil and the right pot
Use a gritty, fast-draining succulent mix — cactus mix or potting soil cut with plenty of perlite/pumice — see potting soil. Crucially, string of pearls has shallow roots, so it does best in a shallow, wide pot with drainage holes, not a deep one that holds a big wet reservoir of soil. A deep pot stays wet too long and invites rot.
#Temperature and feeding
It likes warm, dry air and normal room temperatures, and is fine with low household humidity. Keep it above about 10°C. Feed lightly — a diluted succulent fertiliser once or twice in spring and summer is plenty; skip winter. See fertilising.
#Keeping it full (and propagating)
String of pearls naturally thins at the top over time. To keep it lush:
- Trim leggy strands and lay the cuttings on top of the soil in the same pot — where a pearl-stem touches soil, it roots and fills in the bald patches. Half-bury a few nodes for faster rooting.
- You can also root cuttings in a separate shallow pot to make new plants.
It's one of the simplest succulents to propagate — see propagation. Because the strands are fragile and tempting to pets and hands, hanging it keeps it beautiful and intact.
#Common problems
Bare, leggy strands / thinning top. Too little light. Move it much brighter and trim-and-lay strands to refill.
Mushy, translucent, yellow pearls. Overwatering and rot. Stop watering, remove rotten strands, check the roots.
Shrivelled, deflated pearls. Thirst (soak it) — or, if the soil is wet, root rot preventing uptake (check the roots).
Strands dropping pearls. Usually a watering swing or stress from a move; steady the routine.
#A note on pets
String of pearls is toxic to cats and dogs and the sap can irritate skin. Hang it well out of reach — which conveniently also protects those delicate strands from curious paws.
#The honest verdict
String of pearls isn't hard — it's specific. It won't survive a dim corner or a heavy hand with the watering can. But give it what it actually wants — very bright light, gritty soil in a shallow pot, and water only when nearly dry — and it rewards you with one of the most striking cascades in the whole houseplant world. Meet its two demands and the diva reputation melts away.