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Plant guideCroton care: the complete guide
Guidance compiled from current care guides (Bloomscape, Soltech, Gardener's Path, Plant Addicts, Houseplant411). Figures were taken from search summaries of those pages dated 11 October 2026, expanded on 17 October 2026 (soil, repotting, pruning, propagation; Plant Addicts, Gardening Know How, Patch, Lively Root), and sources disagree on the cold threshold, which this page notes. Sources linked below.
A croton (Codiaeum variegatum) needs bright, indirect light, evenly moist soil and humidity of about 40 to 60 percent, and it drops leaves when moved or chilled. It is toxic to cats and dogs, and its bold leaf colour fades in dim light.
| Attribute | What a croton needs |
|---|---|
| Light | Bright, indirect light; brighter light gives stronger colour |
| Water | When the top 2 to 3 cm (about 1 inch) is dry; evenly moist, never soggy |
| Humidity | About 40 to 60 percent; dry air invites spider mites |
| Temperature | Keep above about 16 C (60 F); sources give 10 to 16 C as the leaf-drop zone |
| Fertiliser | Half-strength liquid feed monthly in spring and summer |
| Toxicity | Toxic to cats and dogs per care sources; ASPCA not checked directly |
How much light does a croton need?
A croton needs bright, indirect light. Light drives the colour. In dim light, new growth comes in green with little variegation, and a grow light can restore the pattern. Harsh direct sun combined with heat and dry soil fades leaves and can scorch them. One source suggests an east or west window. The light guide explains how to judge a spot.
How often should you water a croton?
Water a croton when the top 2 to 3 cm (about 1 inch) of soil is dry, and keep the soil evenly moist but never soggy. Severe overwatering and fully dried-out soil both cause leaf drop. Use a pot with drainage, and see the watering guide and overwatering vs underwatering to read the signs.
Does a croton need high humidity?
Yes, a croton does best at about 40 to 60 percent humidity. Use a humidifier or a pebble tray, and group it with other plants. Dry air is the usual trigger for spider mites, which crotons attract more than most houseplants. The humidity guide covers measuring and raising it.
What temperature does a croton need?
A croton needs steady warmth, and should stay above about 16 C (60 F). Sources disagree on the exact threshold: one says avoid anything below 60 F (16 C), another says leaves drop below 50 F (10 C). Keep it away from cold windows, air-conditioning vents and heaters, because swings trigger leaf loss. The temperature guide has the wider picture.
Why is my croton dropping leaves?
A croton drops leaves from stress: moving, drafts, temperature swings, and watering that is too heavy or too dry. Some loss after a move is normal, and new leaves grow back once the plant settles. Move a croton as little as possible.
| Symptom | Likely cause | Fix |
|---|---|---|
| Leaves drop soon after moving | Acclimation stress | Leave it in one spot and keep care steady |
| Leaves drop, soil soggy, crunchy or limp foliage | Overwatering | Let the top layer dry and check drainage and root rot |
| Leaves drop, soil bone dry | Underwatering | Water thoroughly, then keep evenly moist |
| Leaves drop near a vent or cold window | Draft or cold | Move away from vents and keep above 16 C |
| Wilting and drop after heavy feeding | Fertiliser salt build-up | Flush the soil and feed at half strength |
Why is my croton losing its colour?
A croton loses colour mainly from too little light, and too much direct sun fades it the other way. Green, plain new growth means the plant needs brighter light. Dull, bleached leaves with browning edges mean sun, heat and dry soil together. Dust also blocks light, so wipe the leaves every week or two.
Do crotons need fertiliser?
Yes, feed a croton monthly in spring and summer with a liquid houseplant food diluted to half strength. Too much fertiliser builds up soluble salts that make leaves wilt and drop. See the fertilising guide for general rules.
What soil does a croton need?
A croton needs a well-draining potting mix in a pot with drainage holes. Sources advise a mix formulated for indoor plants, and one suggests adding perlite for extra drainage. Garden soil is the wrong choice because it compacts and holds water around the roots. The soil and pot guide covers mixes.
When should you repot a croton?
Repot a croton every two to three years in spring or early summer, when roots show at the drainage holes. Sources range from every one to two years up to three years, and a new plant waits at least 6 to 12 months before its first repot. Choose a pot only modestly larger (about 5 cm or 2 inches wider), because an oversized pot holds moisture and raises the risk of root rot. The repotting guide covers the steps.
How do you prune a croton?
Prune a croton by trimming dead or yellowing leaves, and cut the main stem just above a bud to control height or force branching. Wear gloves, because the milky sap irritates skin and stains. A leggy croton branches below the cut, which gives a fuller plant.
How do you propagate a croton?
Propagate a croton from a stem cutting of 4 to 6 inches (10 to 15 cm) with at least three leaves, taken in summer. Roots form in roughly a month in warm conditions, and sources give 4 to 8 weeks before the cutting is ready for its own pot.
| Step | What to do |
|---|---|
| Cut | Take a 4 to 6 inch (10 to 15 cm) tip with at least 3 leaves, cutting just below a leaf node |
| Prepare | Strip the lower leaves; rooting hormone is optional but can improve success |
| Plant | Set in a well-draining mix such as perlite with peat |
| Cover | Use a plastic bag or dome, vented to prevent mould |
| Conditions | 70 to 80°F (21 to 27°C), bright indirect light, no direct sun |
| Water | Keep evenly moist, never waterlogged, or the cutting rots |
For a tall, leggy plant, air layering is the alternative. See the propagation guide for the other methods.
What pests affect a croton?
Spider mites are the common pest on a croton, especially in dry air. Mealybugs and scale also appear when conditions are too dry. Raise humidity and follow the spider mites guide to treat an outbreak.
Are crotons toxic to cats and dogs?
Plant-care sources report crotons as toxic to cats and dogs, causing vomiting, drooling and diarrhoea if eaten, and the sap can irritate skin. This page did not verify an ASPCA listing directly, so the croton does not appear in the ASPCA-verified table on the pet-safe plants guide. Keep it out of reach of pets and children, and call a vet or an animal poison hotline if a pet eats it.
FAQ
- How much light does a croton need?
- A croton needs bright, indirect light, and a few hours of gentle direct sun suits it. In dim light new leaves come in green with little variegation, while harsh direct sun fades the leaves.
- Why is my croton dropping leaves?
- Crotons drop leaves from moving to a new spot, cold drafts, temperature swings, and watering that is too heavy or too dry. Hold the plant in one place, keep it above about 16 C (60 F) and water when the top layer of soil dries.
- How often should you water a croton?
- Water a croton when the top 2 to 3 cm (about 1 inch) of soil is dry, and keep the soil evenly moist but never soggy. Both soggy soil and fully dried-out soil cause leaf drop.
- Does a croton need high humidity?
- Yes. Crotons do best at about 40 to 60 percent humidity, and dry air invites spider mites. A humidifier or pebble tray helps, and misting alone is a weak fix.
- Are crotons toxic to cats and dogs?
- Plant-care sources report crotons as toxic to cats and dogs, causing vomiting, drooling and diarrhoea if eaten, and the sap can irritate skin. This page did not check the ASPCA database directly.
- When should you repot a croton?
- Repot a croton every two to three years in spring or early summer, when roots show at the drainage holes, into a pot about 5 cm (2 inches) wider.
- How do you propagate a croton?
- Take a 4 to 6 inch (10 to 15 cm) stem cutting with at least three leaves in summer, strip the lower leaves, plant in a well-draining mix and keep it warm under a vented cover. Roots form in about a month.
- How do you prune a croton?
- Trim dead or yellowing leaves, and cut the main stem just above a bud to control height or encourage branching. Wear gloves because the sap irritates skin.
- What soil does a croton need?
- A well-draining indoor potting mix, with perlite added for extra drainage, in a pot with drainage holes.
Related guides
Sources
- Bloomscape, How to care for your Croton
- Soltech, Croton care
- Gardener's Path, 9 Reasons Why a Croton May Drop Its Leaves
- Gardener's Path, 5 Causes of Fading Croton Leaves
- Plant Addicts, Common Croton Problems
- Plant Addicts, Propagating Croton
- Gardening Know How, How to propagate croton
- Patch, Complete guide to croton care
- Lively Root, Croton care guide
- Houseplant411, Croton Plant Losing Leaves