Caladium is grown entirely for its leaves: huge, heart-shaped or arrow-shaped leaves painted in pink, red, white and green, like no other houseplant. There is no flower worth mentioning — the foliage is the show, and a healthy caladium in full leaf is one of the most colourful plants you can grow indoors. It is also a seasonal plant, and that catches people out. Caladiums grow from tubers, they love warmth and humidity, and they go dormant in winter, dropping their leaves and resting until spring. If you know that is coming, it is not a problem at all — it is just the plant's rhythm. This guide covers exactly what it needs: light, watering, humidity, temperature, soil, repotting, feeding, propagation and the common problems that show up when something is off.
Caladium at a glance
| Care factor | What this plant needs |
|---|---|
| Botanical name | Caladium bicolor |
| Light | bright indirect |
| Water | every 1–2 weeks; let top soil dry |
| Humidity | moderate |
| Temperature | 65–80°F (18–27°C) |
| Repotting | every 2–3 years |
| Pet safety | toxic to cats and dogs |
Light
Give your Caladium bright indirect light. Good light keeps the colours vivid — pink stays pink and white stays white — while too little light makes the leaves fade to green and grow thin and leggy. A spot near an east- or west-facing window is ideal, or a metre or so back from a bright south-facing window. Our grow-light calculator can help work out whether your spot is bright enough.
A little gentle direct sun — early morning or late afternoon — usually helps the colours stay strong, but harsh midday sun through glass can scorch the thin leaves, leaving pale, bleached patches that do not heal. Use a sheer curtain on a south-facing window, and rotate the pot a quarter turn every couple of weeks so it grows evenly.
Watering
Water every 1–2 weeks; let top soil dry. Caladium likes its soil to dry out at the top between waterings, but it does not want to dry out completely while it is in active growth — the big, thin leaves lose water fast in a warm room. Water thoroughly until water runs out of the drainage holes, then empty the saucer so the plant never sits in standing water. Our watering calculator gives a starting point for your pot size, and the watering schedule generator can help you build a routine around it.
When the plant starts going dormant in autumn, ease off sharply: as the leaves yellow and die back, stop watering almost entirely and let the tuber rest dry through winter. Push a finger into the mix before you water during the growing season, since the surface can look dry while the middle is still damp.
Humidity and temperature
Caladium needs moderate humidity and temperatures of 65–80°F (18–27°C). Ordinary indoor humidity suits it, though the leaf edges will crisp a little in very dry, heated air — grouping plants together or using a pebble tray under the pot helps. Our humidity and temperature checker can tell you whether your room suits this plant.
Keep it away from cold draughts from doors and windows, and from radiators and air-conditioning vents. Caladium is a tropical plant that hates the cold — a chill can trigger early dormancy, and it will not start growing again until it is warm. A steady, warm spot is essential, especially in spring when the tuber is waking up.
Soil and potting
Indoors, this plant needs a rich but free-draining potting mix. Standard potting soil mixed with perlite or coco coir works well — the mix should hold some moisture but let excess water drain away quickly, because the tuber rots fast in a heavy, wet mix. A pot with drainage holes is not optional. Our potting-mix calculator can work out the parts for a homemade mix for your pot size.
Plant the tuber shallowly, with the growing points facing up, and do not bury it deep — a tuber planted too deep rots before it sprouts. Start watering lightly in spring and increase as the leaves appear.
Repotting
Repot every 2–3 years, in spring, when the tuber is waking up — that is the natural moment to lift it, check it, and move it into fresh mix. Move up only one pot size, and use fresh, free-draining mix. If the tuber has produced offsets, you can separate them at repotting time — see Propagation below. Our repotting calculator can help you work out the next pot size and how much fresh mix you will need.
Feeding
Feed during the growing season, in spring and summer, with a balanced liquid houseplant fertiliser at half the strength on the label, roughly once a month while the plant is actively growing. Do not feed in autumn and winter, and do not feed a dormant tuber at all. Always follow the directions on the label — more fertiliser is not better, and excess salts build up in the soil and burn the roots, which often shows up as brown leaf edges. Our fertiliser calculator can work out the right dose for your pot size.
Propagation
Caladium is propagated by dividing the tuber, and the natural time to do it is in spring when the tuber is waking up. Lift the tuber, look for natural divisions or offsets with their own growing points, and cut it into pieces with a clean, sharp knife — each piece needs at least one growing point.
Let the cut surfaces dry for a day, then plant each piece shallowly in fresh, free-draining mix, growing points up, and keep it warm and lightly moist until it sprouts. Sprouting can take several weeks, so be patient and do not dig the tuber up to check. Leaf cuttings will not work for caladium — it all starts from the tuber.
Common problems and fixes
| Problem | Likely cause | Fix |
|---|---|---|
| Slow Growth | too little light or pot-bound | Move to brighter light; repot if pot-bound. |
| Pests | check undersides of leaves regularly | Check leaf undersides; remove by hand and repeat weekly. |
| Yellow Leaves | overwatering | Let soil dry more between waterings; check drainage. |
Slow Growth
Likely cause: too little light or pot-bound. Caladium grows slowly in a dim spot, and the colours fade as well as the growth. Move it to a brighter spot — but not into harsh direct sun — and check whether the roots have filled the pot. Also remember that a caladium that has not sprouted in spring may simply be dormant: if the tuber is firm, it is alive, and it will sprout when it is warm enough.
Pests
Likely cause: check undersides of leaves regularly. Caladium is not especially pest-prone, but aphids and spider mites can settle on the thin leaves, especially on new growth. Check the undersides of the leaves every few weeks, and rinse the leaves gently with water if you find pests. Repeat weekly until they are gone, and avoid getting the leaves wet and then leaving them in direct sun. Our pest identifier helper can help confirm what you are dealing with.
Yellow Leaves
Likely cause: overwatering. Yellow leaves, especially lower ones, most often mean the soil has stayed wet for too long. Let the top of the soil dry out before watering again, check that the pot drains freely, and remove the yellow leaves. But remember the season: if it is autumn and the leaves are yellowing all over, the plant is probably going dormant, which is normal — ease off watering and let the tuber rest.
Frequently asked questions
How often should I water Caladium?
Water every 1–2 weeks and let the top soil dry first while the plant is in active growth. Water thoroughly until it runs out of the drainage holes, then empty the saucer. In autumn, as the leaves die back, stop watering almost entirely and let the tuber rest dry through winter.
How much light does Caladium need?
It needs bright indirect light. In too little light the colours fade to green and the leaves grow thin and leggy; in harsh midday sun the thin leaves scorch. A little gentle morning sun helps the colours stay vivid.
Is Caladium safe for cats and dogs?
According to the data used for this guide, this plant is toxic to cats and dogs. Keep it out of reach of pets that chew plants, and if a pet eats any of it, contact your vet.
Why did my Caladium lose all its leaves in winter?
It has gone dormant, which is normal for caladiums. The tuber is resting underground and is not dead — as long as it feels firm, it is alive. Keep it dry and warm through winter, and start watering lightly in spring when it begins to sprout.
How big does Caladium get?
Indoors it usually reaches 30–60 cm tall and wide, with leaves that can grow 15–25 cm across on a mature plant. The display lasts through the warm months, and the plant rests in winter.