Homegrown Giant Colocasia Gigantea Elephant Ear Plant Bulbs (Ready to Sprout)

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Our Giant Colocasia bulbs are meticulously prepared and primed, ensuring they are ready to sprout as soon as you plant them. The bulbs come in a range of sizes, from the compact golf ball to the more substantial softball size. Regardless of the initial size, each bulb is destined to grow into the same magnificent plant.

The Giant Colocasia is truly a spectacle of nature. When it reaches its peak, it stands as one of the largest in the plant kingdom, growing up to an impressive 10 feet in height. The leaves, a striking light green/gray hue, can grow up to 5 feet long and 4 feet wide. These leaves increase in size each year, adding a dynamic, ever-evolving element to your garden.

Cultivation is flexible and rewarding. For optimal growth and the biggest, most luscious leaves, we recommend planting your Colocasia in a location that receives full sun and regular, heavy watering. However, it also thrives in partial sun. Expect to see signs of growth within 6 to 8 weeks after planting.

Choosing & Planting Bulbs

• Best Time to Plant: Spring, after the last frost, when the soil temperature is at least 65°F.
• Location: Full sun to partial shade. More sun encourages larger leaves.
• Soil: Rich, well-draining soil with plenty of organic matter.
• Spacing: 2–4 feet apart, depending on the variety.

Watering & Fertilizing

• Water Needs: Keep soil consistently moist but not waterlogged. These plants thrive in wet conditions.
• Fertilizer: Apply a balanced, slow-release fertilizer at planting. Feed every two to four weeks with a high-nitrogen fertilizer for vigorous growth.

Temperature & Humidity

• Ideal Temperature: 70–85°F. Growth slows below 60°F.
• Humidity: Prefers high humidity but can tolerate drier conditions with regular watering.

Growth & Maintenance

• Mulching: Apply a layer of mulch to retain moisture and suppress weeds.
• Pruning: Remove any yellow or damaged leaves to keep the plant healthy.
• Pests & Diseases: Watch for aphids, spider mites, and fungal issues. Use insecticidal soap or neem oil if necessary.

Winter Care

• In Warm Climates (Zones 8–11): Elephant ears can stay in the ground year-round.
• In Cold Climates (Zones 3–7): Dig up bulbs in fall after the first frost. Let them dry, then store in a cool, dry place until spring.

Propagation

• Division: In spring, separate offsets (small bulbs) from the main plant and replant them.

With proper care, Colocasia will produce large, tropical-looking leaves that make a dramatic statement in any garden.

Check out our ultimate growing guide for additional information and growing tips!

Ready to Sprout: Bulbs come primed for planting, ensuring a hassle-free start to your Colocasia journey.

Impressive Size: Capable of reaching up to 10 feet in height with leaves that can grow 5 feet long and 4 feet wide.

Winter Versatility: Live plants can be brought indoors during winter, while bulbs can be stored and replanted in spring.

Yearly Growth: The leaves of the Colocasia expand in size each year, adding grandeur to your garden season after season.

General USDA Hardiness Zones and Growing Recommendations:

Zones 8 and Warmer:

• The plants can stay outside but will need a blanket of leaves and grass
• Let the frost desiccate the elephant’s ear’s stems naturally. Cutting leads to rot
• Mow over fallen tree leaves and lawn grass to chop them up
• Wrap chicken wire around the plant, and reinforce it with rebar posts stuck into the ground. The wire should be 16 inches from the central stems and tall enough to hold a 6-inch depth of leaves around the base of the plant
• Fill the cage with the prepared leaf-and-grass mixture, and uncover the plants after the last spring frost

Zones Below 8:

• The plants need to come indoors.
• Cut stems to 6 inches tall after the first frost
• Place the tubers in a bulb crate, plastic pot, or grocery bag, and lightly cover the tubers with a mix of peat and soil
• Dampen the mixture with water, and set the container in a cool, dark place to make sure the plant stays dormant. Keep the tubers moist but not wet; wet roots will rot.

Additional USDA Hardiness Zones and Growing Recommendations:

Zones 9–11 (Warm Climates) – Perennial Growth

• Example States: Southern Florida, Southern Texas, Louisiana, Hawaii, Southern California
• Colocasia can stay in the ground year-round.
• Requires regular watering and thrives in warm, humid conditions.
• Mulching helps retain soil moisture.
• No winter protection is needed.

Zone 8 (Mild Winter) – Marginal Perennial Growth

• Example States: Coastal South Carolina, Georgia, Alabama, Mississippi, Northern Florida, Eastern Texas
• Can survive winter in the ground with heavy mulch for insulation.
• Cut back foliage after the first frost.
• If winters are unpredictable, consider lifting and storing bulbs.

Zones 3–7 (Cold Climates) – Annual Growth or Bulb Storage Required

• Example States: Most of the Midwest (Illinois, Ohio, Indiana, Michigan, Wisconsin), Northern and Central Plains (Nebraska, Iowa, South Dakota, North Dakota), Northeast (New York, Pennsylvania, Massachusetts, Vermont, Maine), and Mountain West (Colorado, Utah, Montana)
• Plant bulbs in spring after the last frost.
• In fall, dig up bulbs before the first hard freeze.
• Dry bulbs for a few days, then store in a cool, dry place (50–60°F).
• Replant in spring when soil temperatures reach at least 65°F.

Finding Your Exact Zone:

Use the USDA Hardiness Zone Map to determine your specific zone and adjust care accordingly. By following these guidelines, you can successfully grow Colocasia in any region, whether as a perennial in warm climates or by overwintering bulbs in cooler areas.

• Type: Bulb
• Species: Colocasia gigantea 'Thailand Giant'
• Size: Various bulb sizes available
• Preferred Zones: Zones 8-10 (can be grown in Zones below 8, see Zoning Notes section above)
• Exposure: Full sun to partial shade
• Growth Rate: Fast
• Planting Depth: Plant so the top of the bulb is 2-3 inches below the soil surface
• Spacing: Plant bulbs about 2-3 feet apart
• Watering: Keep soil consistently moist
• Soil: Prefers rich, well-draining soil
• Notes: Keep pets out of reach and away from the plant