How to Grow Sorghum. Sorghum is grown for beer-making, syrup production, and for their edible grains. Some varieties of sorghum, such as broom corn, are used for crafts. Time of Planting. Sorghum is a heat-loving plant. It grows best in climates with long summers. Many gardeners do not direct sow their sorghum until mid-May or even early June.