Plant care guide
Caladium Drooping: Thirst, Rot, Cold or Dormancy?
Updated
Why is my Caladium drooping?
Caladium petioles droop when the tuber cannot supply water fast enough: dry mix, rotting roots in soggy or cold mix, or hot sun. In autumn and winter, drooping and fading leaves are often the start of normal dormancy, when the tuber rests and the leaves die back.
What to do first
Feel the mix first. Water thoroughly if it is dry; if it is wet and cool, stop watering and check the tuber for rot. Keep the plant warm and out of hot sun and drafts. If leaves are also losing color in autumn, let the plant go dormant instead of forcing it.
A caladium that was upright yesterday and flopped today is alarming. The cause is usually simple. Each leaf sits on a long petiole that rises straight from the tuber. Clemson HGIC notes that caladium leaves have no stems and grow on long petioles from the tuber. When water supply drops, those petioles are the first thing to sag. Find out why the supply dropped.
Sort the cause
| What you see | Likely cause | Check next |
|---|---|---|
| Whole plant limp, mix dry, pot light | Thirst | Water thoroughly and watch for recovery |
| Limp in wet mix; tuber soft, roots dark | Tuber or root rot | Drainage, temperature, tuber firmness |
| Droops after a cold night, draft or cold window | Cold | Room and soil temperature |
| Droops in hot afternoon sun, edges scorched | Heat and sun | Light, midday sun |
| Leaves fade and droop one by one in autumn or winter | Dormancy | Season, new leaves stopping |
| Plant wilts soon after watering, roots fill the pot | Pot-bound | Roots circling the pot |
Thirst
NC State calls Caladium bicolor a water guzzler that needs abundant water while growing. UF/IFAS Gardening Solutions advises keeping the soil moist to the touch, never dry and never saturated, which may require frequent watering. Clemson’s guide to houseplant diseases and disorders lists lack of water as a common cause of wilting. It adds that a pot-bound plant wilts because there is too little mix to hold water.
If the mix is dry, water slowly until it drains. Recheck the plant later the same day before watering again.
Soggy or cold mix and tuber rot
Clemson warns that caladiums rot when kept too wet, and that containers need a drainage hole. Clemson and UF/IFAS both note that planting tubers in cool soil causes slow growth or tuber rot. Clemson waits for soil to reach 21 °C (70 °F). UF/IFAS gives a minimum of 16–21 °C (60–70 °F).
Clemson lists rotted roots and too much water among the causes of wilting. The roots die from lack of oxygen. A drooping caladium in cold, wet mix needs drier conditions, not more water.
Unpot it and press the tuber. Clemson describes tuber rot as a fungal decay. Firm tissue is worth keeping. Discard a tuber that is soft throughout.
Cold, heat and sun
UGA Extension says indoor caladiums need medium to bright light, good soil moisture and humidity, and protection from heat registers and cold drafts.
Clemson notes that caladiums need protection from full, hot sun. It lists watering in the hottest part of the day, and too little water, among the causes of scorched leaves. UF/IFAS adds that leaves can burn in direct sun or when under-watered.
Dormancy: drooping that is normal
Caladium is a tuberous plant with a seasonal rest. UF/IFAS says all varieties die back naturally and go dormant in winter. As autumn temperatures cool, the leaves decline. UGA notes that caladiums grown as holiday houseplants can last until mid-February before going dormant.
If leaves are losing color and drooping one by one in autumn or winter, the tuber is resting. Do not try to revive it with more water. Wet mix during dormancy invites rot.
Resting a potted caladium, from UGA and UF/IFAS:
- As leaves lose color and yellow, water gradually less and let the mix dry.
- Clip dried leaves at soil level. Wear gloves: NC State says the sap can irritate skin, and the plant is toxic if eaten.
- Leave the tuber in its pot, or lift it. The UF/IFAS caladium fact sheet (FP083) dries lifted tubers for about 10 days, then stores them in dry peat moss or vermiculite.
- Keep it warm. UF/IFAS and UGA say above 16 °C (60 °F). Clemson warns never to store tubers in the refrigerator.
- UGA rests potted tubers for 4 to 5 months, then moves the pot to a bright spot and resumes watering.
Expect some decline over time. UF/IFAS notes that caladiums naturally decline as they age in all but perfect conditions. Clemson adds that second-year foliage is usually not as good as the first.
What to do now
- Feel the mix 2.5 cm (1 in) down. Dry: water thoroughly. Wet: stop and check the tuber.
- Check the season. Fading leaves in autumn or winter mean dormancy, so start resting the tuber.
- Move the plant out of hot midday sun and away from vents, heaters and cold windows.
- Check drainage. Empty the saucer and use a pot with a drainage hole, as Clemson advises.
- Repot a pot-bound plant into a slightly larger pot, as Clemson suggests.
A leaf that has collapsed may not stand up again. Judge recovery by the next leaves from the tuber.
The Caladium hub covers the rest of its care.
References
- Clemson Cooperative Extension HGIC: Caladium (HGIC 1160)
- UF/IFAS Gardening Solutions: Caladiums
- NC State Extension Gardener Plant Toolbox: Caladium bicolor
- UGA Extension Forsyth County: Holiday Decorating With Plants: Caladiums Versus Poinsettias
- UF/IFAS EDIS: Caladium x hortulanum, Caladium (FP083)
- Clemson Cooperative Extension HGIC: Houseplant Diseases & Disorders (HGIC 2251)
How this guide was put together: Clemson Cooperative Extension HGIC, UF/IFAS Gardening Solutions, UF/IFAS EDIS, NC State Extension and UGA Extension guidance.