Quick answer: 5 native Montana plants have a recorded bloom range that includes November.
5 species
- Big bluestem Andropogon gerardii · 25 states
- Buffalograss Bouteloua dactyloides · 9 states
- Little bluestem Schizachyrium scoparium · 23 states
- Sideoats grama Bouteloua curtipendula · 25 states
- Switchgrass Panicum virgatum · 24 states