Grain Sorghum (Bicolor)

The Grain Sorghum (Bicolor) is generally described as an annual graminoid. This is not native to the U.S. (United States) and has its most active growth period in the summer and fall . The greatest bloom is usually observed in the late summer, with fruit and seed production starting in the summer and continuing until fall. Leaves are not retained year to year. The Grain Sorghum (Bicolor) has a short life span relative to most other plant species and a rapid growth rate. At maturity, the typical Grain Sorghum (Bicolor) will reach up to 8 feet high, with a maximum height at 20 years of 0 inches.

The Grain Sorghum (Bicolor) is easily found in nurseries, garden stores and other plant dealers and distributors. It can be propagated by seed. It has a slow ability to spread through seed production and the seedlings have high vigor. Note that cold stratification is not required for seed germination and the plant cannot survive exposure to temperatures below 47°F. has high tolerance to drought and restricted water conditions.

Plant Basics
Growth Rate Rapid
General Type Graminoid
Growth Period Summer, Fall
Growth Duration Annual
Lifespan Short
Plant Nativity Introduced to U.S.
Commercial Availability Routinely Available
Physical Characteristics
Bloom Period Late Summer
Displays Fall Colors No
Shape/Growth Form Bunch
Drought Tolerance High
Shade Tolerance Intolerant
Height When Mature 8
Vegetative Spread None
Flower Color Yellow
Flower Conspicuousness No
Fruit/Seed Abundance High
Fruit/Seed Seasonality Summer Fall
Seed Spread Rate Slow
Gardening Characteristics
Propagations (Ways to Grow) Seed
Moisture Requirements Medium
Cold Stratification Required No
Minimum Temperature 47
Soil Depth for Roots 12
Toxic to Nearby Plants Yes
Toxic to Livestock No
After-Harvest Regrowth Rate Rapid
After-Harvest Resprout Ability No
Responds to Coppicing No
Growth Requirements
pH Range 5.5–7.5 pH
Precipitation Range 18–18 inches/yr
Planting Density 0–0 indiv./acre
Soil Textures Coarse, Fine, Medium
Soil Depth for Roots 12
Minimum Frost-Free Days 60 day(s)
Salinity Tolerance Medium
CaCO3 Tolerance Low
Sustainability & Use
Leaf Retention No
Palatability Medium
Fire Resistant No
Causes Livestock Bloating None

Source: USDA, NRCS, PLANTS Database,
National Plant Data Center, Baton Rouge, LA 70874-4490 USA