Elephant Ear (Colocasia esculenta 'Jack's Giant') in the Elephant Ears (Colocasia) Database

Common names:
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Give a thumbs up Elephant's Ear
Give a thumbs up Taro

Elephant Ears
History: Discovered by Jack DeVroomen (after whom the plant was named) in a Costa Rican rain forest. Tubers were shared with Tony Avent, who coined the name and put them into tissue culture.
Country of Origin: Costa Rica
Hybridizer or Originator: Jack DeVroomen

General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun to Partial Shade
Partial or Dappled Shade
Minimum cold hardiness: Zone 7b -15 °C (5 °F) to -12.2 °C (10 °F)
Plant Height: 6 to 8 feet (1.8-2.4m)
Flowers: Showy
Flower Color: Other: Yellow-white spathe.
Bloom Size: 6"-12"
Flower Time: Other: Seasonal
Underground structures: Tuber
Suitable Locations: Bog gardening
Uses: Will Naturalize
Eating Methods: Cooked
Resistances: Deer Resistant
Rabbit Resistant
Humidity tolerant
Toxicity: Other: All parts of plant contain calcium oxalate crystals, an irritant to the mouth and esophagus. Toxic to cats and dogs.
Propagation: Seeds: Other info: Remove seed from berry which contains chemicals that inhibit germination.
Propagation: Other methods: Division
Stolons and runners
Offsets
Containers: Suitable in 3 gallon or larger
Miscellaneous: Goes Dormant

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Photo gallery:
Location: Lincoln NE zone 5Date: 2018-06-25
By stilldew
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Location: Swayback's Kentucky Jungle
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Location: z6a MA, my gardenDate: 2015-09-24JG with C. fontanesii.
By eclayne
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Comments:
Posted by eclayne (Pioneer Valley south, MA, USA - Zone 6a) on Oct 1, 2014 10:00 AM

While my Jack's haven't reached their full potential this year, they never fail to bring on a smile. On two plants the 4th leaf to emerge was over 3 feet long, easily living up to its name. They've been happy exposed to mostly sun as well as bright shade, in well amended soil with lots of water.

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Posted by lovesblooms (Maryland - Zone 7a) on Feb 2, 2015 8:16 PM

Mine grew to almost five feet or so, but I may be to blame, since I planted it upside down and it had to work its way back around. When in doubt, lay it on its side! Lost growth time that way. But the leaves are a very impressive presence. Can't wait to try again this season.

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Plant Events from our members
dave On March 22, 2015 Plant emerged
They overwintered just fine through the 2014-2015 winter, which was a typical Zone 8 winter with plenty of freezes.
lovesblooms On May 26, 2015 Plant emerged
lovesblooms On May 2, 2015 Transplanted
» Post your own event for this plant

Discussion Threads about this plant
Thread Title Last Reply Replies
Florida Garden - Summer 2016 by flaflwrgrl Jan 7, 2017 4:14 PM 325
HAVE: Plenty to trade! by lovesblooms Jun 8, 2016 9:07 AM 27
Giant EE Blooming by DavidLMO Nov 16, 2015 9:27 PM 13
Jack's Giant Elephant Ear Bulbs - Crazy Pricing!! by caladiums4less Apr 21, 2015 11:23 PM 13
Let's talk about elephant ears! by Swayback Oct 26, 2018 7:16 AM 1,005
Elephant Ears-Colocasia, Alocasia, Xanthosoma and Caladium by Taylor696 Feb 21, 2016 7:49 AM 595
Show Us Your Cottage Garden & Chat (July 2011) by sandnsea2 Aug 2, 2011 10:20 PM 200

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