If you’re looking for a house plant with that wow factor, you have found it. With shiny black feathered leaves and an easy-care nature, it's sure to stop people in their tracks. Zanzibar gems are one of the easiest indoor plants to grow! The thing that makes them so indestructible is their roots, which are technically succulent rhizomes. These rhizomes absorb and store water that sustain the plant during prolonged periods of dryness.