Quick answer: 6 native Illinois plants have a recorded bloom range that includes November.
6 species
- Big bluestem Andropogon gerardii · 25 states
- Little bluestem Schizachyrium scoparium · 23 states
- Prairie blazing star Liatris pycnostachya · 16 states
- Sideoats grama Bouteloua curtipendula · 25 states
- Switchgrass Panicum virgatum · 24 states
- Witch-hazel Hamamelis virginiana · 28 states