Water Clover Pepperwort Marsilea Schlepiana Commonly found in warm temperate regions,  this shallow water bog plant has long, upward growing rhizomes, that create a canopy of clover shaped leaves over the water's surface. Great for muddy pond edges or large containers. Height: 6-12in. Width: 12-24" Light: Full sun  Moisture: Medium to moist Can be grown in 2" of water. Propagation: division or by stem cuttings in water.  Spacing: 36-48 inches apart. Blooms: In summer Hardy From zone 9 to 12.