How much light does string of hearts need?

Bright light with some direct sun, such as an east window or near a south or west window. In low light the leaves get small, pale and widely spaced along the vines.

How often should I water string of hearts?

When the soil is almost completely dry, usually every 1 to 2 weeks in summer and every 3 to 4 weeks in winter. The leaves feel soft and slightly thin when it is thirsty.

How do I make my string of hearts fuller?

Give it more light, then coil some vines back over the soil surface or pin them down so they root, and plant extra cuttings in the same pot. Trimming long vines also encourages branching.

Why are my string of hearts leaves turning yellow?

Yellow, soft leaves that drop easily usually point to overwatering. Pale leaves with long gaps between them point to low light.

Is string of hearts toxic to pets?

It is not listed in the ASPCA plant database and is not known to be toxic, but ask your vet if a pet eats a lot of it.

String of Hearts Care: Light, Water and Fuller Vines

String of hearts care is easier than its delicate look suggests. Ceropegia woodii is a trailing semi-succulent from southern Africa, with small heart-shaped, silver-marbled leaves on thin purple vines that can hang a metre or more. It stores water in its leaves and in small tubers along the stems and under the soil, so it handles a missed watering much better than a wet pot. Most problems come from soggy soil or a spot that's too dark.

String of hearts care at a glance

Need	What works	Avoid
Light	Bright, with a few hours of gentle direct sun	Dim corners
Water	When soil is almost fully dry	Frequent watering; wet soil
Soil	Gritty, fast-draining mix	Plain compost
Pot	Small terracotta or hanging pot with drainage	Oversized pots
Temperature	15–27°C; above 10°C in winter	Cold draughts
Humidity	Average	Misting
Feeding	Quarter- to half-strength monthly, spring–summer	Winter feeding

The NC State Extension Plant Toolbox describes it as a trailing succulent vine for bright light and well-drained soil.

Light

String of hearts wants bright light with some direct sun. An east-facing window with morning sun is ideal; a south or west window works if the plant is slightly back from the glass in summer. Good light gives you:

Closely spaced leaves along the vine
Strong silver marbling and purple undersides
Thicker, fuller growth

Sign	Meaning
Large gaps between leaves, small pale hearts	Too little light
Leaves turning pink or purple	Strong light, usually fine
Crispy, faded patches	Sudden harsh sun

If your bright window is taken, a small grow light works well for trailing plants. See grow lights for houseplants and the plant light meter converter.

Watering

Water when the soil is almost completely dry. Squeeze a leaf gently: a plump leaf has plenty of water stored, while a soft, thin or slightly wrinkled leaf means it's time.

Water the soil thoroughly until it drains.
Empty the saucer or cachepot after 10 minutes.
Wait until the soil is dry again before the next watering.

Season	Typical frequency
Spring and summer	Every 1–2 weeks
Autumn	Every 2–3 weeks
Winter	Every 3–4 weeks

Symptom	Likely cause
Soft, thin, wrinkly leaves; dry soil	Underwatering
Yellow, mushy leaves dropping	Overwatering
Vines dying from the pot outwards	Root or tuber rot
Bare vines near the top	Old growth, low light, or rot at the crown

If vines are dying back from the soil, unpot and check the roots and tubers. Firm, pale tubers are healthy; mushy brown ones are rotten. See root rot treatment.

Soil and pots

Use a gritty succulent mix: about half cactus compost and half perlite or pumice. A small, shallow terracotta pot is best, because the root system is small and the soil needs to dry quickly. Repot only every two to three years, or when the pot is crowded. The soil mix calculator helps with quantities.

Temperature, humidity and feeding

Normal room temperature suits it. A slightly cooler winter, around 12–15°C, with less water, helps it rest. It doesn't need extra humidity and doesn't like misting.

Feed monthly in spring and summer with a balanced or cactus fertiliser at quarter to half strength. Use the fertilizer dilution calculator to work out the dose.

Making a thin string of hearts fuller

A common complaint is a pot with a few long, stringy vines and bare soil at the top. To fix it:

Improve the light first. Without it, nothing else helps much.
Coil vines back over the soil surface and pin them gently with a bent paperclip. Where leaf nodes touch the soil, they root and send up new growth.
Plant cuttings in the same pot. Take 10–15 cm pieces from long vines and push the cut ends into the soil.
Trim a few of the longest vines; this encourages branching near the top.
Lay tubers (the small round beads on the vines) on the soil; they root and form new plants.

Propagation

Method	How	Time
Stem cuttings in water	10–15 cm pieces, lower leaves removed	Roots in 2–3 weeks
Cuttings on soil	Lay vines flat on moist gritty soil	Roots in 2–4 weeks
Aerial tubers	Press tubers into the soil surface	Roots in 2–4 weeks
Division	Split crowded pots in spring	Immediate

Keep the soil lightly moist, not wet, until new growth starts. More in how to propagate houseplants.

Trimming and tangles

Vines tangle easily. Untangle them when the soil is dry and the leaves are slightly less brittle. Trim any vine that's mostly bare, or cut long vines to the length you want; use the cuttings to fill the pot.

Flowers

Healthy plants in good light produce small, tube-shaped pinkish-purple flowers along the vines. They look odd up close, like tiny lanterns or vases. They're a sign the plant is happy.

Pests and problems

Problem	Cause	What to do
White fluff on vines	Mealybugs	See mealybugs on plants
Tiny flies	Fungus gnats	Let soil dry more
Speckled, dull leaves	Spider mites	See spider mites on plants
Leaves dropping after a move	Change in light or a knock	Stable spot; wait
Vines yellowing at the top	Overwatering	Water less; check tubers

Pet safety

String of hearts is not listed in the ASPCA's toxic and non-toxic plant database, and it isn't known to be toxic. Long trailing vines are tempting for cats to bat and chew, though, and eating any plant can upset a pet's stomach. Hang it out of reach and call your vet if your pet seems unwell. The plant toxicity checker helps with other plants, and string of pearls care covers a lookalike trailing plant that is considered toxic to pets, so check the label before buying.

String of hearts vs string of pearls

	String of hearts	String of pearls
Botanical name	Ceropegia woodii	Curio rowleyanus
Leaves	Flat, heart-shaped	Round beads
Water	When almost dry	When fully dry
Ease	Forgiving	More sensitive to overwatering
Pets	Not known to be toxic	Considered toxic

Seasonal care

Season	Focus
Spring	Repot if crowded, fill pot with cuttings, start feeding
Summer	Water every 1–2 weeks; bright light
Autumn	Reduce watering
Winter	Cool, bright spot; water every 3–4 weeks

Variegated and other varieties

Besides the classic green-and-silver form, you'll find a few popular types:

Variegated string of hearts ('Variegata'), with cream and pink edges. It needs a bit more light to keep its colour and grows more slowly.
'Silver Glory', with almost entirely silver leaves.
String of needles (Ceropegia linearis), a close relative with thin, narrow leaves and the same care.

All of them share the same needs: bright light, gritty soil and careful watering. Variegated forms have less chlorophyll, so they're slower to recover from overwatering or a dim spot.

Common mistakes

Using a large pot. The extra soil stays wet for too long around a small root system.
Hanging it too far from the window. A hanging basket in the middle of a room is often too dark.
Watering every week by habit. Check the leaves and soil first.
Leaving it in the plastic nursery pot inside a cachepot with water pooling at the bottom.

Bottom line

Give string of hearts bright light, a small pot of gritty mix, and water only when the soil is almost dry. To get a full pot, coil and pin vines on the soil and add cuttings. It's forgiving, quick to propagate, and worth a spot in your brightest window.

Sources: NC State Extension Plant Toolbox, Ceropegia woodii; ASPCA Toxic and Non-Toxic Plant List.