Johnsongrass (Sorghum almum)
Care, watering, light and tips for Johnsongrass on Floravia.
Quick facts
- Family: Poaceae
- Difficulty: Easy to care for
- Watering: every 7 days
- Light: Partial shade
- Temperature: 10–30 °C
- Toxicity: Toxic to pets
About Johnsongrass
Sorghum almum, commonly known as Sorghum, is a robust and fast-growing annual or short-lived perennial grass that can reach heights of up to 4 meters. Its erect stems and long, flat leaves give it a dense appearance, ideal for land revegetation or as a forage crop over large areas. It is less common as an ornamental plant, but its stature can add texture to rustic or agroecological landscapes.
Native range
Africa and Asia
Care tips
It requires full sun exposure for optimal growth and good production, tolerating high temperatures well. This plant is relatively drought-tolerant once established but benefits from regular watering during dry periods, especially in its early stages. It prefers well-drained, fertile soils with a neutral to slightly acidic pH. A common mistake is late planting in areas with cold winters, as it does not tolerate frost and its growth cycle will be compromised.
How to save a dying Johnsongrass
- Warning signs
- Yellowish or reddish, curled leaves; stunted growth; weak or dry stems.
- First aid
- Ensure consistent, sufficient watering; protect from late frosts. If potted, consider repotting.
- What kills it
- Prolonged drought or excessive waterlogging, early or late frosts.
- Can it be saved?
- Yes, if roots aren't completely rotted or main stem dry. Responds well to care.