Science · Plants, Natives & Crops
Sorghum-Sudangrass
Sorghum-sudangrass is a rapidly growing hybrid used for summer forage and cover cropping. Drought and freezing can increase forage toxicity risks, so appearance alone should not be used to judge feed safety.
Profile
- Parentage
- A hybrid of forage sorghum and sudangrass.
- Season
- Grows best under warm summer conditions.
- Soil
- Does not grow well on poorly drained soils.
- Feed safety
- Prussic acid and nitrate accumulation are distinct hazards requiring appropriate management.
Water & soil context
- Moisture (VWC)
- Use well-drained soil; avoid poorly drained sites.
- Salinity tolerance
- No salt-tolerance class or threshold is assigned here from the cited publications.
- Drought tolerance
- Well adapted to dry conditions, but drought-stressed forage can present nitrate and prussic acid hazards.
Illustrative monitoring-depth band
3–8 in
Editorial placement example, not a validated optimum or total rooting depth. Confirm the site's root distribution and soil horizons; multiple depths may be needed.
Drought tolerance does not make stressed forage safe to feed; assess toxicity risk before grazing or harvesting.
Problems to watch
- Prussic acid accumulation
- Nitrate accumulation
- Freeze injury
- Drought stress
- Poor soil drainage
Stress signs
- Freeze-killed leaves or stems
- Young regrowth after stress, which can carry elevated prussic acid risk
- Toxicity has no dependable visible diagnostic sign; forage testing may be needed.
Where you'll find it
- Livestock grazing
- Silage
- Green chop
- Cover cropping
More plants, natives & crops
Published botanical and soil references are distinct from GroundWorx product guidance. Moisture thresholds and monitoring depths require site calibration; sources do not establish product performance or diagnose stress.