A Moses-in-the-Cradle-Plant, 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. Moses In the Cradle Plants produce rosettes of long ,waxy, sword-shaped leaves that are glossy green on top and a rich purple on the under side. The very small three petaled white flowers of a Moses-in-the-Cradle Plant are tucked away in a purple boat shaped bract in the leaf axil. This gives a Moses-in-the-Cradle plant its many common names. Treat A Moses-in-the-Cradle 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..