North America Non-native Plant

Tall Elephant’s Ear

Botanical name: Xanthosoma undipes

USDA symbol: XAUN

Life cycle: perennial

Habit: forb

Native status: Non-native, reproduces and persists in the wild in Puerto Rico  

Synonyms: Xanthosoma jacquinii Schott (XAJA)   

Tall Elephant’s Ear: A Tropical Foliage Plant for Warm Climates If you’re drawn to bold, tropical foliage that makes a statement in the garden, you might have stumbled across the tall elephant’s ear (Xanthosoma undipes). This lesser-known member of the elephant ear family brings that signature broad-leafed drama we associate ...

Tall Elephant’s Ear: A Tropical Foliage Plant for Warm Climates

If you’re drawn to bold, tropical foliage that makes a statement in the garden, you might have stumbled across the tall elephant’s ear (Xanthosoma undipes). This lesser-known member of the elephant ear family brings that signature broad-leafed drama we associate with tropical landscapes, though it comes with some important considerations for the conscientious gardener.

What Is Tall Elephant’s Ear?

Xanthosoma undipes, commonly known as tall elephant’s ear, is a perennial herbaceous plant that belongs to the diverse world of elephant ear plants. Unlike its woody cousins, this forb lacks significant woody tissue and instead puts all its energy into producing those characteristic large, eye-catching leaves that give elephant ears their name.

You might also encounter this plant listed under its botanical synonym, Xanthosoma jacquinii Schott, in older gardening references or plant catalogs.

Where Does It Come From?

Here’s where things get a bit interesting from a native gardening perspective. Tall elephant’s ear is not native to the United States. Currently, it’s found growing in Puerto Rico, where it has established itself as a non-native species that reproduces on its own in the wild. While it has naturalized there, its original native range remains unclear from available sources.

Should You Plant Tall Elephant’s Ear?

This is where responsible gardening comes into play. Since Xanthosoma undipes is non-native and there’s limited information about its potential invasive tendencies, it’s worth proceeding with caution. While we don’t have specific data marking it as invasive or noxious, its ability to reproduce spontaneously in Puerto Rico suggests it can establish itself readily in suitable climates.

If you’re passionate about supporting local ecosystems and wildlife, consider exploring native alternatives that provide similar bold foliage effects. Many regions have native plants with large, dramatic leaves that can create the same tropical aesthetic while supporting local pollinators and wildlife.

Growing Conditions and Care

Unfortunately, specific growing information for Xanthosoma undipes is quite limited in available sources. However, based on its classification as a tropical elephant ear and its established presence in Puerto Rico, we can make some educated assumptions:

  • Likely thrives in warm, humid conditions typical of tropical and subtropical climates
  • Probably suitable for USDA hardiness zones 9-11, though this needs verification
  • As a forb, it will die back to underground parts during cooler periods and regrow from the base
  • Most elephant ear plants prefer consistently moist soil and partial shade to filtered sunlight

Landscape Role and Design

If you do choose to grow tall elephant’s ear, it would likely serve as a dramatic focal point in tropical-themed gardens or as part of a lush, jungle-like landscape design. The large leaves typical of Xanthosoma species create excellent textural contrast against finer-leafed plants and can help establish that coveted tropical ambiance.

A Word of Caution

Given the limited specific information available about this particular species, including unknowns about its wildlife benefits, exact growing requirements, and potential impact on local ecosystems, we’d recommend thorough research before adding it to your garden. Consider reaching out to local extension offices or native plant societies for guidance on appropriate alternatives that might give you similar aesthetic results while supporting your local environment.

Remember, the most sustainable gardens are those that work with nature rather than against it, supporting local wildlife and requiring fewer resources to maintain.

Tall Elephant’s Ear

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Arecidae

Order

Arales

Family

Araceae Juss. - Arum family

Genus

Xanthosoma Schott - elephant's ear

Species

Xanthosoma undipes (K. Koch) K. Koch - tall elephant's ear

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA