Lowland rice grows in wet paddies, or riparian areas. We have found that while lowland rice prefers wet clay soil, paddies and flooding are not needed. These varieties are typically shorter and will produce more tillers than upland rice.
In general, they outperform upland varieties in wetter soils, and also are less likely to lodge (fall over) when ripe or ripening. Lodging is more of an issue for machinery operations. Try to keep soil moist through the middle of July. Heights max around 3 feet.