Troubleshooting
Carousel Little Bluestem problems — and how to fix them
Carousel Little Bluestem (Schizachyrium scoparium 'Carousel') is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Floppy or open habit
Almost always caused by over-rich soil or too much shade. Grow in full sun with no fertiliser in lean, free-draining soil.
Crown rot in wet winters
The primary killer. Plant in well-drained soil; mound planting or raised beds in areas with wet winters. Cut back old growth in late winter to improve airflow.
Rust
Fine orange pustules in humid summers. Improve air circulation; remove heavily affected foliage. Cut plants back in late winter to start fresh.
Slow establishment in heavy clay
Amend clay with coarse grit before planting and consider a raised mound. Do not compensate with extra watering.
Loss of autumn colour in warm climates
Autumn red is most intense in cooler USDA zones 3-6. In warmer zones the display is less vivid but still ornamental.
Prevent carousel little bluestem problems before they start
Most carousel little bluestem issues are care-mismatch, not bad luck. Dial in the basics:
Carousel Little Bluestem problems — FAQ
Why is my carousel little bluestem floppy or open habit?
Almost always caused by over-rich soil or too much shade. Grow in full sun with no fertiliser in lean, free-draining soil.
Why is my carousel little bluestem crown rot in wet winters?
The primary killer. Plant in well-drained soil; mound planting or raised beds in areas with wet winters. Cut back old growth in late winter to improve airflow.
Why is my carousel little bluestem rust?
Fine orange pustules in humid summers. Improve air circulation; remove heavily affected foliage. Cut plants back in late winter to start fresh.
Why is my carousel little bluestem slow establishment in heavy clay?
Amend clay with coarse grit before planting and consider a raised mound. Do not compensate with extra watering.
Why is my carousel little bluestem loss of autumn colour in warm climates?
Autumn red is most intense in cooler USDA zones 3-6. In warmer zones the display is less vivid but still ornamental.