Quick answer: 22 native Maine plants have a recorded bloom range that includes March.
22 species
- American holly Ilex opaca · 24 states
- American hornbeam Carpinus caroliniana · 29 states
- Atlantic white cedar Chamaecyparis thyoides · 12 states
- Birdfoot violet Viola pedata · 14 states
- Black ash Fraxinus nigra · 10 states
- Black cherry Prunus serotina · 32 states
- Bur oak Quercus macrocarpa · 24 states
- Canada yew Taxus canadensis · 4 states
- Common blue violet Viola sororia · 21 states
- Creeping phlox Phlox subulata · 11 states
- Eastern red cedar Juniperus virginiana · 36 states
- Eastern red columbine Aquilegia canadensis · 36 states
- Mayapple Podophyllum peltatum · 18 states
- New Jersey tea Ceanothus americanus · 31 states
- Northern red oak Quercus rubra · 24 states
- Red maple Acer rubrum · 30 states
- Red pine Pinus resinosa · 13 states
- Scarlet oak Quercus coccinea · 17 states
- Silver maple Acer saccharinum · 18 states
- Virginia springbeauty Claytonia virginica · 10 states
- White oak Quercus alba · 33 states
- Wild blue Phlox divaricata · 32 states