Quick answer: 45 native Louisiana plants have a recorded bloom range that includes September.
45 species
- Big bluestem Andropogon gerardii · 41 states
- Black-eyed Susan Rudbeckia hirta · 44 states
- Blue mistflower Conoclinium coelestinum · 32 states
- Buffalograss Bouteloua dactyloides · 19 states
- Butterflyweed Asclepias tuberosa · 40 states
- Cardinal flower Lobelia cardinalis · 41 states
- Carolina jessamine Gelsemium sempervirens · 10 states
- Common buttonbush Cephalanthus occidentalis · 29 states
- Common yarrow Achillea millefolium · 47 states
- Compass plant Silphium laciniatum · 20 states
- Crimson-eyed rose-mallow Hibiscus moscheutos · 28 states
- Cutleaf coneflower Rudbeckia laciniata · 43 states
- Devil's walking stick Aralia spinosa · 21 states
- Dotted blazing star Liatris punctata · 17 states
- Eastern purple coneflower Echinacea purpurea · 24 states
- Fall obedient plant Physostegia virginiana · 37 states
- Grayhead coneflower Ratibida pinnata · 26 states
- Great blue lobelia Lobelia siphilitica · 36 states
- Hollow Joe-pye weed Eutrochium fistulosum · 24 states
- Indiangrass Sorghastrum nutans · 37 states
- Inland sea oats Chasmanthium latifolium · 21 states
- Little bluestem Schizachyrium scoparium · 42 states
- Loblolly bay Gordonia lasianthus · 7 states
- Longleaf pine Pinus palustris · 10 states
- Maypop passionflower Passiflora incarnata · 21 states
- Mexican hat Ratibida columnifera · 17 states
- Partridge pea Chamaecrista fasciculata · 30 states
- Pink-scale blazing star Liatris elegans · 9 states
- Prairie blazing star Liatris pycnostachya · 19 states
- Purple prairie clover Dalea purpurea · 18 states
- Roundhead lespedeza Lespedeza capitata · 30 states
- Scaly blazing star Liatris squarrosa · 22 states
- Scarlet rosemallow Hibiscus coccineus · 9 states
- Sideoats grama Bouteloua curtipendula · 38 states
- Spotted beebalm Monarda punctata · 29 states
- Stokes aster Stokesia laevis · 7 states
- Swamp milkweed Asclepias incarnata · 37 states
- Swamp sunflower Helianthus angustifolius · 21 states
- Switchgrass Panicum virgatum · 43 states
- Tall blazing star Liatris aspera · 26 states
- Trumpet vine Campsis radicans · 33 states
- Virginia saltmarsh mallow Kosteletzkya pentacarpos · 11 states
- Wholeleaf rosinweed Silphium integrifolium · 16 states
- Witch-hazel Hamamelis virginiana · 33 states
- Yellow passionflower Passiflora lutea · 21 states
September in a Louisiana native garden
September is a quieter month in Louisiana: 45 of the state's 179 native plants flower in September, compared with 121 at the May peak. That makes these plants valuable for keeping color, and food for pollinators, going outside the main season.
Witch-hazel starts blooming in September. 20 finish in September, including Butterflyweed, Common buttonbush and Common yarrow, so this is the last chance to see them in flower.
39 of them grow in full or partial sun and 10 tolerate shade, so there are options for open beds and woodland edges alike. Sizes run from low plants like Black-eyed Susan and Buffalograss to trees such as Carolina jessamine and Devil's walking stick. For wildlife, 39 support pollinators, 32 provide food or cover for birds and 14 are caterpillar host plants.
40 of the 45 have a seed or plant listing we verified as the wild species. Be careful buying Black-eyed Susan, Common yarrow, Crimson-eyed rose-mallow: common listings for these are often a bred variety or a different species.
Good places to start
Verified wild-species listings that take sun and are widely native, so they are forgiving first plants.
- Cutleaf coneflower Rudbeckia laciniata · Sun, Part Shade, Shade · blooms Jul-Oct
- Little bluestem Schizachyrium scoparium · Sun, Part Shade · blooms Jun-Dec
- Big bluestem Andropogon gerardii · Sun, Part Shade · blooms Aug-Nov