Species

Colocasia esculentaTaro

27 other cultivars

perennial

Rhubarb Elephant Ear

Colocasia esculenta 'Rhubarb'

The Story

Plant Bio

Colocasia esculenta 'Rhubarb' is a lush, tropical perennial known for its large, heart-shaped, dark green leaves with prominent veins, and its distinctive upright growth habit. It produces small, inconspicuous flowers on tall stalks.

This cultivar is notable for its vibrant, reddish petioles that resemble rhubarb stalks, adding ornamental appeal and making it a striking addition to water gardens and tropical landscapes.

Uses & Benefits:

Creates a striking tropical focal point with large, colorful foliage.

Edible tubers provide culinary uses, adding to garden productivity.

Supports pollinators attracted to its lush foliage.

SpeciesColocasia esculentaTaro

Essentials

At a Glance

Plant Type

Perennial

Height

24 inches

Width

36 inches

Light

Partial Sun, Shade

Zones

7, 8, 9, 10

Water

Consistently moist

Humidity

Prefers high humidity

Lifespan

Perennial

Native To

Tropical Asia and Pacific regions

Toxicity

Leaves toxic if ingested

Bloom period

Mid-summer – Late summer

In flower about 2 months of the year

Planting

How to Grow

Tuck rhizomes 2 inches deep in well-draining soil.
Water generously to keep soil moist, especially during dry spells.
Mist foliage regularly to increase humidity around the plant.
Place in partial shade for optimal growth.
Fertilize monthly with a balanced fertilizer during growing season.
Mulch to retain moisture and suppress weeds.

Pro Tip

Ensure consistent moisture and partial shade for best foliage development.

Keep It Thriving

Care Guide

Do

Keep soil consistently moist 🌱
Apply mulch to retain moisture
Fertilize monthly during growing season
Provide partial shade in hot climates

Don't

Avoid waterlogging the roots ❌
Do not expose to full sun in hot climates ❌
Over-fertilize, which can cause leaf burn ❌
Ignore pests like aphids and slugs

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Fertilize
Lift Store
Pest Check
Plant

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Tropical border with lush foliageShade garden accentVanilla-scented border

Companion Plants

Ferns Hostas CaladiumColeus Cannas

Multiply

Propagation Methods

Good to Know

Common Questions

Rhubarb Elephant Ear questions

What zones can Rhubarb Elephant Ear grow in?

Rhubarb Elephant Ear is hardy in USDA Zones 7–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Rhubarb Elephant Ear deer resistant?

Not reliably. Deer may browse Rhubarb Elephant Ear, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Rhubarb Elephant Ear bloom?

Rhubarb Elephant Ear typically blooms in mid-summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Rhubarb Elephant Ear need full sun?

Rhubarb Elephant Ear does best in part shade.