The Heat-Loving Waterleaf That Keeps Producing When Ordinary Spinach Gives Up Traditional spinach sees a Florida summer coming and immediately starts planning its exit. Surinam Spinach—also called Waterleaf—takes the opposite approach. This fast-growing tropical vegetable produces tender, succulent leaves through warm, humid weather. It tolerates partial shade, responds quickly to repeated harvesting, grows well in containers, and can turn an underused corner of the garden in