Rice (Oryza sativa) is an annual warm-season grass that grows up to 4 feet tall. It is usually grown in flooded plots of land, but it will grow in soil that is kept consistently moist as well. Rice needs at least 40 consecutive days of temperatures over 70 degrees Fahrenheit to produce, and it takes 90 to 180 days from planting to harvest.
An area that gets full sun, a minimum of 6 to 8 hours of sunlight per day, is required to grow rice. Seeds are planted in the spring after all danger of frost has passed and the soil has warmed. Sow seeds about 1 1/2 inches deep and 6 inches apart. Nitrogen fertilizer is added at the time of planting, with a side-dressing added mid-season.