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Elephant Ear, Taro
Colocasia esculenta 'Big Dipper'

Family: Araceae (a-RAY-see-ee) (Info)
Genus: Colocasia (kol-oh-KAY-see-uh) (Info)
Species: esculenta (es-kew-LEN-tuh) (Info)
Cultivar: Big Dipper


Ponds and Aquatics

Tropicals and Tender Perennials


4-6 ft. (1.2-1.8 m)


24-36 in. (60-90 cm)


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


All parts of plant are poisonous if ingested

Bloom Color:

Pale Yellow


Bloom Time:

Unknown - Tell us


Grown for foliage

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:


Propagation Methods:

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

Seed Collecting:

Unknown - Tell us


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

Cabot, Arkansas

Yulee, Florida

Louisville, Kentucky

Saint Louis, Missouri

Raleigh, North Carolina

Cincinnati, Ohio

Baytown, Texas

Mc Kinney, Texas

show all

Gardeners' Notes:


On Mar 13, 2011, chuck7701 from McKinney, TX (Zone 8a) wrote:

Nice coloring, dark green top, purple stalk and underside. Bigger bulbs were 4-5 feet tall in second year.

As mentioned before, this plant is pretty prolific via runners. In two years, i went from one bulb to several dozen.


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

Big dipper is one of a couple of elephant ears with upturned leaves that can catch water. So does Coffee cups.


On Oct 2, 2009, mswestover from Yulee, FL (Zone 9a) wrote:

At first, I had it in the ground, but with the "droughts" that we get in zone 9a, I could not keep it wet enough. It has grown from a little pup to a big plant in six months. Beautiful when it rains and you watch the leaves catch and spill the rain water.


On Dec 22, 2005, bwilliams from Louisville, KY wrote:

I named this several years ago as Big dipper. It was being grown in hawaii and a few other places with no name. A mutation off of violet stem colocasia.


On Sep 11, 2004, henryr10 from Cincinnati, OH (Zone 6b) wrote:

Very deep 'Dipper' shape to the leaf.

Probably a sport of 'Violet Stem' as it has the same colors and leaf surface.

During a rain the leaves will hold an ounce or two of water before bending over and releasing.
Very pretty to watch.

VERY heavy pupper and runner, much more so than 'Violet'.