Botanical Name: Sorghum bicolor
Hardiness: Frost-sensitive annual
Plant Dimensions: 6'–15' tall
Variety Information: 16"–20" seed panicles; seeds range in color from reds to browns and blacks.
Exposure: Full sun
Bloom Period: Late summer to fall
When to Sow Outside: RECOMMENDED. 1 to 2 weeks after your average last frost date, and when soil temperature is 60°–80°F. In the deep South, this can mean as early as February.
When to Start Inside: Not recommended.
Days to Emerge: 7 – 14 days
Seed Depth: ½"
Seed Spacing: A group of 2 seeds every 12"
Thinning: When 4" tall, thin to 1 every 12"
Special Instructions: If necessary, protect seedlings from birds. Broom corn does not need to be isolated from corn plants; they will not cross-pollinate.