Quick answer: 5 native Mississippi plants have a recorded bloom range that includes December.
5 species
- Carolina jessamine Gelsemium sempervirens · 10 states
- Little bluestem Schizachyrium scoparium · 42 states
- Longleaf pine Pinus palustris · 10 states
- Prairie blazing star Liatris pycnostachya · 19 states
- Witch-hazel Hamamelis virginiana · 33 states