Moses in the Cradle, Tradescantia spathacea, (alternative names include: Moses-in-a-Boat, Boat Lily, Cradle Lily, Moses-in-the-Bullrushes, Oyster Plant, Rhoeo discolor) is an attractive easy care houseplant native to Mexico, the West Indies, and Central America. It produces rosettes of long waxy sword shaped leaves that are glossy green on top and rich burgundy on the under side. The very small three petaled white flowers of a Moses-in-the-Cradle are tucked away in a purple boat shaped bract in the leaf axil. This gives the plant its many common names. Treat this plant as you would a succulentSucculents, native to very dry areas of the tropics and subtropics, adapted to a limited availability of water by developing thick roots, leaves, and stems. These parts of the plant collect and store water in order to survive long periods of drought. This gives succulents a very swollen appearance and its nickname, the fat plant. Succulents need little water or humidity..