How to Grow Colocasia (elephant ear plant): Top Tips and Best Varieties Homegrown Giant Colocasia Gigantea Elephant Ear Plant Bulbs Colocasia LIVE BULBS Colocasia gigantea Thailand Giant Thai Giant Elephant Ear Homegrown Giant Colocasia Gigantea Elephant Ear Plant Bulbs Colocasia. DetailsConditionNewBIGGEST ELEPHANT EARS: The biggest Elephant Ears Bulbs you will find on the internet. Guaranteed. EASY TO GROW: Good soil and full sun and water will push these tropical bulbs to become giant plants. Dig them up to reuse for years. We include instructions and an easy to follow video link. Its amazing and fun to grow truly titanic Elephant Ears