Quick answer: 41 native Louisiana plants have a recorded bloom range that includes March.
41 species
- American elm Ulmus americana · 4 states
- American holly Ilex opaca · 24 states
- American hornbeam Carpinus caroliniana · 29 states
- American olive Osmanthus americanus · 4 states
- American sycamore Platanus occidentalis · 24 states
- Birdfoot violet Viola pedata · 14 states
- Black cherry Prunus serotina · 32 states
- Black willow Salix nigra · 2 states
- Boxelder Acer negundo · 14 states
- Carolina jessamine Gelsemium sempervirens · 9 states
- Coral honeysuckle Lonicera sempervirens · 16 states
- Crossvine Bignonia capreolata · 5 states
- Eastern bluestar Amsonia tabernaemontana · 8 states
- Eastern red cedar Juniperus virginiana · 36 states
- Eastern redbud Cercis canadensis · 30 states
- Farkleberry Vaccinium arboreum · 5 states
- Flowering dogwood Cornus florida · 22 states
- Loblolly pine Pinus taeda · 14 states
- Mayhaw Crataegus opaca · 3 states
- Mexican plum Prunus mexicana · 4 states
- Mountain azalea Rhododendron canescens · 9 states
- Northern spicebush Lindera benzoin · 16 states
- Orange azalea Rhododendron austrinum · 5 states
- Pink evening primrose Oenothera speciosa · 8 states
- Possumhaw Ilex decidua · 7 states
- Post oak Quercus stellata · 9 states
- Red buckeye Aesculus pavia · 9 states
- Red maple Acer rubrum · 30 states
- River birch Betula nigra · 23 states
- Sassafras Sassafras albidum · 22 states
- Shortleaf pine Pinus echinata · 9 states
- Shumard oak Quercus shumardii · 5 states
- Southern crabapple Malus angustifolia · 2 states
- Southern live oak Quercus virginiana · 13 states
- Southern red oak Quercus falcata · 6 states
- Sweetgum Liquidambar styraciflua · 22 states
- Two-wing silverbell Halesia diptera · 5 states
- Water oak Quercus nigra · 4 states
- White oak Quercus alba · 33 states
- Willow oak Quercus phellos · 16 states
- Woodland pinkroot Spigelia marilandica · 4 states