Bulb · Araceae
Elephant Ear
Colocasia esculenta
Load it up with rich soil, full sun, and water that never quits, and elephant ear rockets out giant tropical leaves all season.
Full sun
45–86°F · 7–30°C
USDA 8–11
3–6 ft · 0.9–1.8 m
Overview
Want fast tropical drama? Elephant ear delivers it. The huge, heart-shaped leaves shoot past 3 feet (91 cm) and ride tall stalks above a pond edge or a damp bed, building a jungle look in record time. It joins the arum family and grows from a chunky corm, the same plant kitchens prize as taro.
This one thrives where warm meets wet, and it puts on a real show. Inside its hardy range of zones 8 to 11 it charges back year after year, and colder gardens just run it as an annual or move it indoors over winter. Plant it right at a pond margin in shallow standing water and it digs in where most plants would simply rot.
Keep the water coming and it powers ahead with almost no effort. Soak the soil, feed it through the warm months, and tuck it out of harsh wind, and it builds a bold, racing clump of foliage. Just place it smartly, since every raw part is toxic, so site it clear of pets and children.
Care
The short version: load it with rich, constantly wet soil that never dries, full sun to part shade, plenty of warmth, and a monthly feed through spring and summer, then lift the corms before frost where it is not hardy.
Light
Elephant ear charges ahead in full sun, and it still does great in part sun or part shade. Pile on the light for the richest, biggest leaves, but if your summers really cook, hand it some afternoon shade to keep the foliage from scorching.
Water
This is the make-or-break, and it is dead simple. The plant craves constantly wet, boggy soil and should never dry out, and it happily anchors as a pond marginal in up to 6 inches of standing water. Crank up the sun and heat and its thirst climbs right with it, so keep that water flowing.
Soil
Set it into fertile, humus-rich clay or loam that grips moisture, the kind of soggy ground most plants would hate. It powers through the odd flood without blinking, which is exactly why it owns a spot at a pond edge.
Temperature
It loves the heat, racing along from about 45°F to 86°F (7°C to 30°C), and it eases off as the air cools. It carries zero frost tolerance, so the first freeze closes the season above ground, no surprise once you have the corms tucked away.
Humidity
Born from steamy tropical ground, it laps up high humidity. Damp air keeps those broad leaves crisp-free at the edges, one more reason it shines parked beside water.
Feeding
All through spring and summer, while it is pushing hard, hit it with a balanced fertilizer once a month. Rich soil plus steady feeding is the fuel behind those oversized leaves.
Pruning
Barely any work here, just light cleanup. Clip off tattered, yellowing, or frost-damaged leaves as they show up, and keep the plant out of strong wind, which rips the big soft leaves.
Repotting
Divide and repot the corms in spring as the clumps bulk up. Crowded corms, shrinking leaves, or a clump pushing up out of the pot are your green light to split it and open up room.
Size & spacing
Hand it room, because a grown clump shoots to 3 to 6 feet (91 to 183 cm) tall and just as wide. Space plants well apart so those huge leaves can throw themselves open without crowding.
When to plant
Elephant ear runs on heat and slams to a stop at frost, so the calendar is easy to play. Drop the corms in mid-spring once the soil warms and the cold clears out, let the foliage build momentum through the warm months, and dig the corms back up before the first fall frost wherever the plant is not hardy.
Northern hemisphere
Southern hemisphere
Typical months for a temperate climate: start earlier in warm zones, later where spring frosts linger.
- Plant: Plant corms in mid-spring after the soil warms and frost danger has passed
- Harvest: Rarely flowers in cultivation (yellowish-white spathe); grown as a foliage plant
Hardiness
USDA hardiness zones: 8–11
Temperature: down to -12°C
Troubleshooting
Elephant ear shrugs off most pests, so when something looks off it almost always tracks back to dryness or cold. Scan the leaves and the cause jumps right out. Match what you see below and jump on it before more foliage drops.
Browning, scorched leaf edges and wilting leaves
This almost always means the bog plant has gone thirsty, plain and simple. Elephant ear demands wet soil at all times, and full hot sun drains it fast and crisps the big leaves at the edges. Water it deeply, throw down mulch to lock in the moisture, and give it afternoon shade where summers really bite.
Fix:
- Water deeply and keep soil consistently wet
- Mulch to retain moisture
- Provide afternoon shade in hot climates
Leaves collapse and turn black after a cold night
That is frost damage, and it strikes the second a tropical plant hits freezing air. The first fall frost blackens the foliage overnight, but the plant lives on underground. Cut back the trashed leaves, then dig the corms and stash them somewhere cool and dry above 45°F (7°C) until spring.
Fix:
- Cut back damaged foliage
- Dig corms after first frost and overwinter in a cool, dry place above 45°F
Toxicity
Place this one with care, because no raw part of it belongs near a mouth. The leaves, stems, and corm pack insoluble calcium oxalate crystals that sting and swell the mouth and throat the instant they get chewed, and the swelling can turn serious. It hits cats, dogs, horses, and people the same way, and only the cooked corm turns into edible taro, so keep the raw plant clear of pets, livestock, and children.
Toxic to
Cats · Dogs · Horses · Rabbits · Livestock · Birds · People
Cats Moderate
A cat that chomps a leaf catches a fast, painful sting in the mouth, so watch for heavy drooling, pawing at the face, a swollen mouth and tongue, vomiting, and trouble swallowing.
Dogs Moderate
The crystals torch a dog's mouth on contact, so most spit the plant right out, with drooling, retching, a swollen tongue, and difficulty swallowing following close behind.
Horses Moderate
A grazing horse catches the same searing of the mouth and lips, with drooling and a flat refusal to eat as the swelling sets in.
Rabbits Toxic
Those same raphides tear into a rabbit's mouth and gut, and a small animal has next to no margin, so keep elephant ear well out of any rabbit's reach.
Livestock Toxic
Cattle, goats, and sheep that browse the raw foliage take painful mouth swelling and digestive upset, and they can turn away from food while the mouth recovers.
Birds Toxic
A curious bird that nibbles the leaves catches the same caustic burn to the mouth and crop, so treat the whole raw plant as flat-out off limits.
People Caution
Raw, every part stings the mouth and throat and can swell the airway, so this is no salad green. The corm turns into edible taro only after a thorough cook in salted water, and cooked right it is safe while raw it is not.
Wear gloves when dividing corms; plant sap and raphides can irritate skin and mucous membranes.
Helpline numbers
United States
ASPCA Animal Poison Control: (888) 426-4435 (fee applies)
Poison Control: (800) 222-1222
Canada
Poison Centres: 1-844-764-7669
Varieties
The elephant ears that really grab attention go dark and dramatic with their foliage. These standouts come up most often, and any of them brings the wow.
'Black Magic'
It flings out dusky purple-black leaves on matching dark stems for an almost charcoal punch.
'Illustris'
It fires dark, almost black leaves laced with bright green veins that leap off the deep color.
'Black Coral'
It throws glossy, ruffled foliage in a deep blue-black that grabs the light.
'Mojito'
It scatters green leaves flecked and splashed at random with dark purple-black, so no two ever match up.
How to propagate
Pumping out more elephant ears takes almost nothing, since the plant spreads through its own corms. Split what you already grow and you are off and running.
DivisionEasy
Spring, as new growth begins · A few weeks to establish in warm, moist conditions
The fastest route to more is splitting a clump in spring right as new growth fires up. Pry the corms apart, pot them in rich, peaty mix, and keep them constantly moist. Give them warmth and they grab hold within a few weeks.
Bulbs & cormsEasy
Plant corms in mid-spring after frost · Sprouts and establishes over several weeks once soil is warm
You can also launch from stored corms set out in mid-spring, once frost clears and the soil warms. They sprout and root over several weeks. In zones colder than its hardy range, lift the corms each fall and keep them above 45°F (7°C) through winter.
Myths
Elephant ear and taro are poisonous, so they can never be eaten.
Raw, sure, it is toxic, since insoluble calcium oxalate raphides torch the mouth. But cook the corm through in salted water and you unlock a tropical staple, the taro behind Hawaiian poi. Cooking flips it to safe; raw, it stays poisonous.