Giant Elephant Ear
Colocasia gigantea

Family: Araceae (a-RAY-see-ee) (Info)
Genus: Colocasia (kol-oh-KAY-see-uh) (Info)
Species: gigantea (jy-GAN-tee-uh) (Info)
View this plant in a garden

Category:

Bulbs

Ponds and Aquatics

Height:

6-8 ft. (1.8-2.4 m)

Spacing:

36-48 in. (90-120 cm)

Hardiness:

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

Sun Exposure:

Full Sun

Sun to Partial Shade

Danger:

All parts of plant are poisonous if ingested

Bloom Color:

Pale Yellow

Bloom Time:

Mid Summer

Late Summer/Early Fall

Foliage:

Grown for foliage

Deciduous

Herbaceous

Veined

Other details:

Requires consistently moist soil; do not let dry out between waterings

Very high moisture needs; suitable for bogs and water gardens

Soil pH requirements:

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

Patent Information:

Non-patented

Propagation Methods:

By dividing rhizomes, tubers, corms or bulbs (including offsets)

Seed Collecting:

Seed does not store well; sow as soon as possible

Regional

This plant has been said to grow in the following regions:

,

Tucson, Arizona

Malvern, Arkansas

Clayton, California

Escondido, California

Torrance, California

Gulf Breeze, Florida

Navarre, Florida

Seminole, Florida

Winter Haven, Florida

Winter Springs, Florida

Colbert, Georgia

Dallas, Georgia

Savannah, Georgia

Horse Cave, Kentucky

Kenner, Louisiana

Rienzi, Mississippi

Joplin, Missouri

Billings, Montana

Roswell, New Mexico

Elizabeth City, North Carolina

Raleigh, North Carolina

Statesville, North Carolina

, Ontario

Fannettsburg, Pennsylvania

Aynor, South Carolina

Florence, South Carolina

Amarillo, Texas

Austin, Texas

Baytown, Texas (2 reports)

Mansfield, Texas

Midlothian, Texas

Odessa, Texas

San Antonio, Texas

Chesapeake, Virginia

Manassas, Virginia

Concrete, Washington

show all

Gardeners' Notes:

6
positives
2
neutrals
0
negatives
RatingContent
Positive

On Jul 14, 2010, siren77hr from Gulf Breeze, FL wrote:

I love this plant. I just planted the tubers about 3 months ago and they have already filled in the whole corner. Fast and easy growing here in in my NW Florida garden. Couldn't be any happier.

Neutral

On Jul 14, 2010, Metrosideros from Keaau, HI wrote:

Colocasia gigantea is referred to in Hawai'i as 'iliuaua.

Positive

On Apr 5, 2010, stella from Raleigh, NC (Zone 7a) wrote:

Colocasia gigantea is an incredible plant. It is slow to get started in my North Carolina Garden but once July rolls around, watch out!

Positive

On Jul 23, 2009, DanKistner from Winter Haven, FL (Zone 9b) wrote:

I love "Big" plants and this is certainly one of them!

Positive

On May 1, 2009, redcamaro350ss from Statesville, NC wrote:

Not had much time growing this plant. (mine are only about four inches tall now) They do start pretty easily from seed but in an experiment we did in a class at NCSU they required cold stratification. The seeds seem to take a while even after that and may require more patience than anything. I started out with two plants, but after planting them (6 weeks later) some more of the seeds germinated. After they germinate growth is rapid!

Positive

On Mar 22, 2008, Michaelp from Glendale, UT (Zone 5a) wrote:

Taste test for Iliuaua
Iliuaua is a good Table variety,The Corm, is similar to Bunn Long but is not as dry in Texture, and has a different flavor, I like the flavor,
--Iliuaua corm is best eaten while still growing well, before it starts to send growth to the corm [late summer and fall], if eating the Mother Corm, -[as the main corm get tough and acrid when it is making offset corms.] Just pull the whole plant and take the leaves and corm for eating and re-plant the Huli, [to get more taro growth and small Taro plants for planting later].
If the plant is mature and beginning to slow down on leaf production it is better to wait for the offset corms to fully develop and the top to die back, then just harvest the offset corms for eating.
The leaves... read more

Positive

On Sep 26, 2007, joan30157 from Dallas, GA (Zone 7b) wrote:

I love these elephant ears, they provide shade for the smaller varieties that can't take the full sun. They also provide a great habitat for frogs and lizards. Also great for hide and seek.

Neutral

On Jan 20, 2006, Suze_ from (Zone 7b) wrote:


Plant Delights offers this description:
"Resembling an alocasia, the 6' tall grey petioles (stalks) hold the large silver-veined grey-green leaves outright. When the plants mature, the tip of the leaf arches downward and each leaf develops bizarre appendages on the underside...you'll just have to see it for yourself. This clone of C. gigantea makes a fast-multiplying clump, but without the long runners of many C. esculenta forms...still plenty to share"