Taro leaves and bulbs are different than Malangas. They grow faster but Malangas get bigger. Taro bulbs are roundish while Malanga bulbs are pointy and look like a root. Malangas don't need as much water as Taros. It's nearly impossible to drown a Taro.
Below is a picture of a bed of Taro and Malangas. The Malangas are the bottom picture and do get larger than Taros. Picture is from a member of gardenguides.com and Garden Web Forum. I hope the 6 I planted get this big!
On a different note, I planted 2 Black Magic EE's, a Jack's Giant EE, 2 Black Beauties, 2 Pink Chinas and 2 Hawaiian Eyes.
