Quick answer: 13 native South Dakota plants have a recorded bloom range that includes March.
13 species
- Bearberry Arctostaphylos uva-ursi · 16 states
- Bur oak Quercus macrocarpa · 24 states
- Canada wild rye Elymus canadensis · 18 states
- Common blue violet Viola sororia · 21 states
- Eastern cottonwood Populus deltoides · 14 states
- Eastern red cedar Juniperus virginiana · 36 states
- Eastern red columbine Aquilegia canadensis · 36 states
- Jack-in-the-pulpit Arisaema triphyllum · 14 states
- Purple meadow-rue Thalictrum dasycarpum · 7 states
- Pussy willow Salix discolor · 9 states
- Quaking aspen Populus tremuloides · 24 states
- Silver maple Acer saccharinum · 18 states
- Smooth Solomon's seal Polygonatum biflorum · 13 states