How to Grow Alocasia

Commonly known as elephant's ear, this family of big-leafed tropical plants can be grown outdoors as a dramatic specimen plant or indoors as a houseplant.

Alocasia

Alocasia's large, heart- or arrow-shaped leaves can grow up to 3 feet long and 2 feet wide, making elephant's ear a dramatic plant.

Photo by: Shutterstock/mokjc

Shutterstock/mokjc

Alocasia's large, heart- or arrow-shaped leaves can grow up to 3 feet long and 2 feet wide, making elephant's ear a dramatic plant.

Alocasia is a family of tropical plants grown for its big, beautiful leaves. Long a garden favorite in warm zones, there are many types of alocasia now grown as houseplants.

Alocasia has large, heart- or arrow-shaped leaves that look a bit like elephant ears. That’s how alocasia got its common name: elephant’s ear. The ginormous leaves can get up to 3 feet long and 2 feet wide, making alocasia a dramatic plant.

If you live in a tropical climate, you can grow alocasia outdoors, where its huge leaves will be a dramatic accent for your garden or yard. Elephant’s ear will reach 1 to 3 feet tall and 3 to 6 feet wide, depending on the type.

Outside of the tropics, you can grow alocasia outdoors as an annual, or dig it up and bring it indoors for the winter and replant it in the spring. There are nearly 100 species of alocasia, and most of them are grown as houseplants.

Note: Elephant ear is the common name for the plant species Colocasia, too. A lot of people call Colocasia esculenta, also known as wild taro, elephant’s ear. But we’re focusing on the species alocasia.

Botanical Name: Alocasia spp
Common Name: elephant ear, elephant's ear, Alocasia
Bloom Time: Prized for its foliage
USDA Hardiness Zones: 10 to 12

Planting and Growing Alocasia

Elephant’s ear does best in part shade or filtered sun. Plant it where it gets morning sun and afternoon shade. Too much direct sun will scorch its leaves and leave them scarred the rest of the season.

Start elephant’s ear from rhizomes indoors in a big pot, six weeks or so before the last frost. Move it outdoors when the nighttime temperatures reach 50 degrees or higher.

You can also start elephant’s ear with nursery plants so you’ll get those big leaves in your house or garden sooner.

It’s a great container plant for a shady porch or patio. Put it a large container and it will thrive all growing season.

If you live in a place that’s not tropical, you can still make elephant’s ear part of your garden. Dig a hole in the garden, sink a container of alocasia in the hole until the rim is level with the surrounding ground and leave it all season. Bring the plant indoors, pot and all, before the first frost and overwinter it indoors in a cool, humid spot.

You can also grow alocasia as an annual if you live in cold climates. Just plan on buying a new plant each spring when your old plant dies in the first frost.

Plant them in rich, well-drained moist soil. They don’t do well in clay soils or in standing water.

Caring for Alocasia

Water and fertilize outdoor elephant’s ear regularly. Indoor alocasia does best if you let the soil dry out between waterings.

Elephant's ear doesn’t like having its roots disturbed. If you dig them up and move them to bring them inside for the winter or to a new location, they’ll need a couple of months to re-establish themselves.

Propagate elephant’s ear and other types of alocasia through division. That means digging up chunks of rhizomes (the plant’s tuberous roots) when it gets too crowded in a garden or container and growing new plants from the rhizomes.

Remove leaves that get damaged or turn brown. You don’t need to prune alocasia — just trim it to keep it looking tidy.

Pests and Diseases

Alocasia is prone to fungal leaf blight. Those big old leaves hold water and will get a telltale fuzzy growth on them. Left untreated, fungal leaf blight will infect the entire plant. Treat it by cutting off the diseased leaves and applying a copper-based fungicide to the plant.

Spider mites like this plant for the shade of those big leaves. If you see webbing on the leaves, or tiny yellow or brown holes in leaves, or if leaves start dropping off, you may have a spider mite infestation. Hose the mites off with water and apply an insecticidal soap to keep them from coming back.

Recommended Elephant's Ear Varieties

Here are some good species and cultivars of alocasia for you to grow indoors or out:

Giant upright elephant’s ear Alocasia macrorrhiza has enormous glossy leaves on rigid stems. This is the alocasia most frequently grown outside, mainly because of its size. It grows to 8 feet tall and about that wide. The clumping plant gives a garden a tropical look, no matter the location.

alocasia macrorrhiza

Alocasia macrorrhiza is the alocasia variety most grown outside.

Photo by: Shutterstock/Bagus Wiranjaya

Shutterstock/Bagus Wiranjaya

Alocasia macrorrhiza is the alocasia variety most grown outside.

African mask plant Alocasia amazonica has large, leathery leaves shaped like arrowheads and tint in hues of olive, green, bronze and maroon. Dramatic veining gives the foliage a striped look. It grows to 3 feet tall and is hardy in Zones 9 to 11.

Alocasia amazonica

Alocasia amazonica grows up to 3 feet tall.

Photo by: Shutterstock/Tyo Fortyseven

Shutterstock/Tyo Fortyseven

Alocasia amazonica grows up to 3 feet tall.

‘Black Magic’ elephant’s ear Alocasia infernalis ‘Black Magic’ is good for containers because it grows slowly and is just a foot tall at maturity. Its purple leaves are so dark that they look black, and they shine as if they’ve been shellacked. It’s a gorgeous plant.

Next Up

How to Grow Ponytail Palm (Beaucarnea recurvata)

Easy-to-grow ponytail palm needs very little care. Use this leafy beauty, also called elephant foot plant, as a houseplant or in a sunny landscape.

Dracaena Plant Care

Dracaena houseplants are easy to care for with our experts' planting and growing tips.

Hostas: How to Plant, Grow and Care for Hostas

Learn why easy-growing hostas are one of the most popular perennials.

Poinsettia Care Through Winter (and Beyond)

This iconic holiday plant has tropical roots. Get tips on keeping your poinsettia looking its best all year.

Growing Asparagus Ferns

Grow airy, feathery asparagus ferns as houseplants or garden ornamentals. Indoors or out, asparagus fern care is easy.

Growing Christmas Ferns

Staying green deep into winter's chill, these evergreen ferns bring color to your garden when every other living thing has turned brown.

How to Plant and Grow Chinese Evergreen

Caring for Chinese evergreens is easy, and these pretty houseplants brighten rooms with low light, or even no natural light, with their leaves of pink, green, creamy white and red.

Prayer Plant Care

Prayer plants put on a show at night, when they fold up their attractive leaves like praying hands. Pot up these charming houseplants for tabletops or hanging baskets.

How to Grow and Care for Euonymus

Whether in shrub or vine form, euonymus’s popularity is matched only by its propensity for annoying pests and disease problems. We offer solutions to common issues as well as suggestions for native alternatives to replace problematic euonymus plants.

How to Care for a Snake Plant

If you tend to kill plants with neglect, then the tough-as-nails snake plant is the right choice for you. Get care tips including how often to water snake plant and how to repot snake plant.

Go Shopping

Get product recommendations from HGTV editors, plus can’t-miss sales and deals.

On TV

Follow Us Everywhere

Join the party! Don't miss HGTV in your favorite social media feeds.