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String of Dolphins Care

Curio × peregrinus · Asteraceae

⚠️ Toxic to pets 🎯 Moderate ☀️ Bright indirect 💧 Every 12–18 days

🕮 8 min read 🕓 Last reviewed: 2026-08-23

Care at a glance

Watering

Every 12–18 days

Light

Bright indirect

Temperature

10–26 °C (50–79 °F)

Humidity

Low

Soil

gritty, fast-draining cactus/succulent mix

Difficulty

Moderate

Mature size

15–60 cm (6–24 in)

Pet safety

Toxic to pets

Care effort Medium

The short version

A little attention keeps it happy.
Give it Bright indirect.
Water every 12–18 days.
Keep away from cats and dogs.

The String of Dolphins (Curio × peregrinus) is a popular houseplant from the Asteraceae family, native to Garden hybrid. It is rated Moderate to grow and typically reaches 15–60 cm indoors. Here is everything you need to keep it healthy — watering, light, humidity, feeding, propagation, and pet safety. It is a Moderate grower, putting on most of its growth in the warm, bright months of spring and summer.

Also known asCurio × peregrinusドルフィンネックレス海豚项链Collar de DelfinesCollier de dauphins

📋Quick facts

Growth rate	Moderate
Mature size	15–60 cm (6–24 in)
Native region	Garden hybrid
Plant family	Asteraceae
Toxicity	Toxic
Air-purifying	No
Ideal for	frequent travellers, shelves & hanging pots, sunny sills

⚖️Pros & cons

Pros

Beautiful trailing habit

Cons

Toxic to cats and dogs

💧Watering

Water your String of Dolphins roughly every 12–18 days, letting the top few centimetres of soil dry out between waterings. Always empty the saucer so the roots never sit in water — overwatering is the most common way this plant is lost.

Not sure when to water? Push a finger 2–3 cm into the soil and water only when it feels dry at that depth — a cheap moisture meter or the weight of the pot works too. Water thoroughly until it runs from the drainage holes, then tip away anything left in the saucer. Soft, yellowing lower leaves usually mean too much water; crispy, curling leaves usually mean too little. Always ease off in the darker months, when the plant drinks far less.

Never forget to water

Adds a repeating event to Google Calendar every 15 days.

📅 Add a watering reminder

☀️Light & placement

The String of Dolphins likes bright, indirect light — near a window but out of direct midday sun, which can scorch the leaves.

Set it right beside an east window, or just back from a south/west one behind a sheer curtain, so it gets plenty of light without direct midday rays on the leaves. Rotate the pot weekly for even growth, and dust the leaves so they can drink in the light.

🌡️Temperature & humidity

Keep it between 10–26 °C and away from cold draughts and heating vents. It prefers Low humidity; if your air is dry, group it with other plants or use a humidifier.

🪴Soil & feeding

Plant it in gritty, fast-draining cactus/succulent mix. Feed with a light succulent feed once or twice in the growing season, and stop feeding in autumn and winter when growth slows.

🗓️Season-by-season care

Season	Watering	What to do
Spring (Mar–May)	Resume regular watering as growth restarts.	The main growing season begins — start feeding again, repot if it is pot-bound, and take cuttings now for the best success.
Summer (Jun–Aug)	This is the thirstiest season; check the soil more often.	Keep feeding on schedule, watch for pests in the warmth, and shield the leaves from scorching midday glass. Higher humidity is welcome.
Autumn (Sep–Nov)	Let the soil dry a little longer between waterings.	Taper off feeding as growth slows, and move the plant away from cold windows and doorways before the first chills.
Winter (Dec–Feb)	Water sparingly — overwatering now is the number-one killer.	Stop feeding, give it the brightest spot you have, and keep it away from radiators, heat vents, and cold draughts.

🪟Repotting

Repot roughly every 2 years, ideally in spring as growth picks up. Move up just one pot size (2–3 cm wider) with drainage holes — too big a pot holds water and invites root rot. Signs it is time: roots creeping from the drainage holes or circling the surface, water running straight through, or growth that has stalled. In the years you do not repot, scrape off and replace the top few centimetres of soil.

✂️How to propagate, step by step

Spring and early summer, during active growth, give the best success. Here is how to do it, step by step:

stem cuttings in soil

Cut a 10–15 cm stem just below a node and remove the lower leaves.
Dip the cut end in rooting hormone if you have it (optional).
Push it into moist, well-draining mix and firm the soil around it.
Cover loosely with a clear bag to hold humidity, and keep in bright, indirect light.
After a few weeks, a gentle tug that meets resistance means roots have formed — remove the bag and grow on.

🔬Classification

Plant type	Succulent
Genus	Curio
Family	Asteraceae · Asteraceae
Native to	Garden hybrid

🩺Common problems

Symptom	Likely cause	What to do
Soft, mushy base (root rot)	Waterlogged soil	Repot into fresh dry mix, trim rotten roots, and water less.
Drooping or wilting	Too little (or too much) water	Check the soil: water if dry, ease off if soggy.
Pests (mites, mealybugs)	Dry conditions or a new infected plant	Wipe the leaves, rinse, and treat with insecticidal soap or neem.

🩺 Plant Doctor →

🐛Pests & prevention

The usual indoor pests are spider mites (fine webbing, speckled leaves), mealybugs (white cotton-wool tufts), scale (small brown bumps), and fungus gnats (tiny flies from soggy soil). Inspect any new plant before it joins the others, wipe the leaves now and then, and let the topsoil dry to keep gnats away. At the first sign, isolate the plant, wipe or rinse off what you can, and treat with insecticidal soap or neem oil every week until it is clear.

🐾Is it safe for pets?

The String of Dolphins is toxic to cats and dogs (pyrrolizidine alkaloids / irritant sap). Keep it out of reach of pets and children. If you think an animal has chewed it, contact your vet or a pet poison line. If a curious cat or dog chews it, the irritant sap can cause mouth and skin irritation, drooling, and stomach upset. It is rarely life-threatening in small amounts, but rinse the animal’s mouth, take away any plant pieces, and call your vet if symptoms are severe or last more than a short while.

Toxicity information is a general guide based on ASPCA data. If your pet or child may have eaten any part of a plant, contact a vet or poison control right away.