Sorghum Halepense

Description

Sorghum Halepense, commonly known as Johnson grass, is a perennial grass that belongs to the Poaceae family. It is native to the Mediterranean region but has spread to other parts of the world due to its use as a forage crop and its ability to grow in various soil types. Johnson grass is a fast-growing plant that can reach up to 10 feet in height. It has a robust root system that can grow up to 20 feet deep in the soil. The plant produces large panicles that contain seeds which are dispersed by wind or animals.

Taxonomic Information

Appearance

Johnson grass has long, narrow leaves that can grow up to 3 feet in length. The leaves are green and have a rough texture. The plant produces large panicles that can grow up to 2 feet in length. The panicles contain seeds that are yellow or reddish-brown in color. The plant has a robust root system that can grow up to 20 feet deep in the soil.

Care Guide

Water: Johnson grass is a drought-resistant plant and can survive in areas with low rainfall. However, it thrives in moist soil and can grow faster when watered regularly.Fertilization: Johnson grass does not require fertilization as it can grow in various soil types. However, adding nitrogen-rich fertilizers can increase its growth rate.Soil: Johnson grass can grow in various soil types but thrives in fertile, well-drained soils.Sunlight: Johnson grass requires full sunlight to grow and can tolerate high temperatures.Hardiness Zones: Johnson grass can grow in USDA Hardiness Zones 5 to 10.

Common Pests & Diseases

Johnson grass is susceptible to numerous pests and diseases such as armyworms, cutworms, aphids, rust, and leaf blight. The pests can cause significant damage to the plant, while diseases can affect its growth and yield.

Habitat

Johnson grass can grow in various habitats such as fields, pastures, roadsides, and waste areas. It prefers moist soils but can grow in dry areas as well.

Question and Answer

Q: Is Johnson grass toxic?A: Yes, Johnson grass contains a compound called dhurrin, which can release cyanide when ingested by animals.Q: Can Johnson grass survive in cold climates?A: No, Johnson grass cannot survive in areas with harsh winters.Q: Can Johnson grass be used as a forage crop?A: Yes, Johnson grass is often used as a forage crop for livestock.Q: How can I control Johnson grass in my garden?A: You can control Johnson grass by regularly mowing it to prevent seed production and using herbicides.

Related Plants

• Sorghum bicolor
• Sorghum sudanense
• Sorghastrum nutans
• Andropogon gerardii

References

• USDA Plants Database. (n.d.). Sorghum halepense. Retrieved August 31, 2021, from https://plants.usda.gov/core/profile?symbol=SOHA3
• Johnson Grass Identification and Control. (2021, April 27). Retrieved August 31, 2021, from https://www.thespruce.com/johnson-grass-identification-and-control-4163955
• Johnson Grass. (2021, January 15). Retrieved August 31, 2021, from https://www.extension.purdue.edu/extmedia/ay/ay-238.html