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Native plants · Louisiana

Native plants of St. Mary Parish

470 plant species are recorded as native to Louisiana in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in St. Mary Parish by USDA PLANTS. 226 of them have growing records you can filter by light, moisture, height and estimated cold hardiness. 3 more species are listed as both native and introduced and kept in a separate section.

County summary · USDA PLANTS and Kew WCVP

St. Mary Parish, Louisiana

Native species
470 Typical Louisiana county: 587 (median of 64 counties)
Garden-ready natives
226 Typical Louisiana county: 271
Share by type (all 470 native species)
Percent of the 470 native species in each growth type
Tree 14% (66)
Shrub 1% (7)
Wildflower (forb) 48% (227)
Grass or grass-like 26% (120)
Vine 8% (39)
Fern 2% (11)

Wildflowers make up the largest share of the native list (48%), followed by grasses and grass-like plants (26%).

Recorded native ranges can include long-established populations that spread from gardens; check your state’s native plant society list for local guidance. How native status is decided.

ZIP codes mainly in this county fall in USDA hardiness zone 9b (2023 map).

The native plant list

Cold hardiness is estimated from each plant’s PLANTS minimum temperature. How we estimate it.

Garden-ready natives 226

Native species with PLANTS growing records (height, light, moisture, minimum temperature). “—” means PLANTS has no value.

Garden-ready native plants of St. Mary Parish, Louisiana
PlantType HeightLight Water useHardy to
American basswood Tilia americana Tree 100 ft Shade-tolerant Medium Zone 2b
American beautyberry Callicarpa americana Shrub 6 ft Sun–part shade Low Zone 6b
American bur-reed Sparganium americanum Wildflower (forb) 3.2 ft Sun–part shade High Zone 4a
American cupscale Sacciolepis striata Grass or grass-like 3 ft Sun Low Zone 5b
American elm Ulmus americana Tree 120 ft Sun–part shade High Zone 2b
American holly Ilex opaca Tree 40 ft Shade-tolerant Medium Zone 5a
American pokeweed Phytolacca americana Wildflower (forb) 7.3 ft Shade-tolerant Medium Zone 4a
American snowbell Styrax americanus Tree 10 ft Sun–part shade — Zone 5b
American spongeplant Limnobium spongia Wildflower (forb) 6 in Sun High Zone 5a
American sycamore Platanus occidentalis Tree 100 ft Sun–part shade High Zone 4a
American water-willow Justicia americana Wildflower (forb) 2.5 ft Shade-tolerant Medium Zone 4b
American wisteria Wisteria frutescens Vine 50 ft Shade-tolerant Medium Zone 7a
bald cypress Taxodium distichum Tree 130 ft Sun–part shade High Zone 5b
big bluestem Andropogon gerardii Grass or grass-like 6 ft Sun Low Zone 2b
big cordgrass Spartina cynosuroides Grass or grass-like 8 ft Sun High Zone 7a
bitternut hickory Carya cordiformis Tree 75 ft Sun Medium Zone 2b
black cherry Prunus serotina Tree 80 ft Sun Medium Zone 4a
black willow Salix nigra Tree 100 ft Sun High Zone 1b
blackgum Nyssa sylvatica Tree 95 ft Shade-tolerant Medium Zone 5b
blue mistflower Conoclinium coelestinum Wildflower (forb) 3.2 ft Shade-tolerant Medium Zone 6a
blunt broom sedge Carex tribuloides Grass or grass-like 3 ft Shade-tolerant Medium Zone 4b
blunt spikerush Eleocharis obtusa Grass or grass-like 1.6 ft Sun Medium Zone 11a
boxelder Acer negundo Tree 60 ft Shade-tolerant Medium Zone 2b
broadleaf arrowhead Sagittaria latifolia Wildflower (forb) 4.9 ft Sun High Zone 4a
broadleaf cattail Typha latifolia Wildflower (forb) 5 ft Sun–part shade High Zone 3b
broadleaf signalgrass Urochloa platyphylla Grass or grass-like 3 ft Sun Medium Zone 9a
broomsedge bluestem Andropogon virginicus Grass or grass-like 3 ft Sun Medium Zone 5b
buckthorn bully Sideroxylon lycioides Tree 9.8 ft Shade-tolerant Low Zone 4b
bushy bluestem Andropogon glomeratus Grass or grass-like 6.3 ft Sun High Zone 5a
bushy seaside tansy Borrichia frutescens Shrub 2.6 ft Sun Medium Zone 9a
butterweed Packera glabella Wildflower (forb) 3.2 ft Sun High Zone 10b
calico aster Symphyotrichum lateriflorum Wildflower (forb) 4 ft Sun Medium Zone 4a
California bulrush Schoenoplectus californicus Grass or grass-like 6.6 ft Sun High Zone 9a
Canada goldenrod Solidago altissima Wildflower (forb) 5 ft Sun–part shade Medium Zone 4b
Canadian horseweed Conyza canadensis Wildflower (forb) 5 ft Sun Medium Zone 12b
cardinalflower Lobelia cardinalis Wildflower (forb) 5.9 ft Shade-tolerant Low Zone 4a
Carolina buckthorn Frangula caroliniana Tree 20 ft Shade-tolerant — Zone 4b
Carolina elephantsfoot Elephantopus carolinianus Wildflower (forb) 2.7 ft Sun Medium Zone 6a
Carolina fanwort Cabomba caroliniana Wildflower (forb) — Sun–part shade High Zone 5a
Carolina foxtail Alopecurus carolinianus Grass or grass-like 1.7 ft Sun Low Zone 3a
catbird grape Vitis palmata Vine 30 ft Sun–part shade Medium Zone 6a
cedar elm Ulmus crassifolia Tree 90 ft Sun–part shade Medium Zone 6a
cherrybark oak Quercus pagoda Tree 120 ft Sun Medium Zone 6b
Chickasaw plum Prunus angustifolia Tree 12 ft Sun Medium Zone 4b
clasping coneflower Dracopis amplexicaulis Wildflower (forb) 2 ft Sun High Zone 10b
climbing hempvine Mikania scandens Vine 1 ft Shade-tolerant Medium Zone 3b
coast cockspur grass Echinochloa walteri Grass or grass-like 6.5 ft Sun High Zone 10b
coastal plain willow Salix caroliniana Tree 33 ft Sun–part shade High Zone 7b
common blue violet Viola sororia Wildflower (forb) 4 in Sun–part shade High Zone 4b
common buttonbush Cephalanthus occidentalis Tree 15 ft Shade-tolerant High Zone 4a
common evening primrose Oenothera biennis Wildflower (forb) 5 ft Sun Medium Zone 4b
common goldstar Hypoxis hirsuta Wildflower (forb) 10 in Sun–part shade Medium Zone 4a
common hoptree Ptelea trifoliata Tree 25 ft Sun–part shade High Zone 4a
common persimmon Diospyros virginiana Tree 55 ft Shade-tolerant Medium Zone 5a
common rush Juncus effusus Grass or grass-like 6.6 ft Sun Medium Zone 3b
common spikerush Eleocharis palustris Grass or grass-like 1.3 ft Sun High Zone 3b
common winterberry Ilex verticillata Tree 10 ft Sun–part shade High Zone 4b
coon's tail Ceratophyllum demersum Wildflower (forb) — Sun–part shade High Zone 3b
copper iris Iris fulva Wildflower (forb) 3.3 ft Shade-tolerant High Zone 5a
crimsoneyed rosemallow Hibiscus moscheutos Wildflower (forb) 6.6 ft Sun High Zone 6a
cupseed Calycocarpum lyonii Vine 30 ft Shade-tolerant Medium Zone 7a
cursed buttercup Ranunculus sceleratus Wildflower (forb) 2 ft Shade-tolerant High Zone 12b
cypress swamp sedge Carex joorii Grass or grass-like 4.5 ft Shade-tolerant High Zone 7a
dahoon Ilex cassine Tree 26 ft Shade-tolerant High Zone 8b
delta arrowhead Sagittaria platyphylla Wildflower (forb) 3 ft Sun High Zone 6a
devil's beggartick Bidens frondosa Wildflower (forb) 4 ft Sun–part shade Medium Zone 12a
devil's darning needles Clematis virginiana Vine 15 ft Sun–part shade Medium Zone 3b
devil's walkingstick Aralia spinosa Tree 20 ft Sun High Zone 4b
disk waterhyssop Bacopa rotundifolia Wildflower (forb) 1 in Sun High Zone 4a
dotted smartweed Polygonum punctatum Wildflower (forb) 3.2 ft Sun Medium Zone 10b
dwarf palmetto Sabal minor Tree 9 ft Shade-tolerant High Zone 8a
dwarf spikerush Eleocharis parvula Grass or grass-like 1.2 ft Sun Medium Zone 3b
dwarf St. Johnswort Hypericum mutilum Wildflower (forb) 2.6 ft Sun–part shade Medium Zone 5a
eastern annual saltmarsh aster Symphyotrichum subulatum Wildflower (forb) 3 ft Sun Medium Zone 7a
eastern baccharis Baccharis halimifolia Tree 10 ft Sun–part shade High Zone 7a
eastern gamagrass Tripsacum dactyloides Grass or grass-like 5 ft Sun High Zone 5a
eastern narrowleaf sedge Carex amphibola Grass or grass-like 2 ft Shade-tolerant Medium Zone 7a
eastern redcedar Juniperus virginiana Tree 50 ft Sun–part shade Low Zone 3a
eastern swampprivet Forestiera acuminata Tree 33 ft Shade-tolerant High Zone 5b
fall panicgrass Panicum dichotomiflorum Grass or grass-like 3.3 ft Sun High Zone 3a
false daisy Eclipta prostrata Wildflower (forb) 3.2 ft Sun–part shade Medium Zone 10b
flowering dogwood Cornus florida Tree 30 ft Shade-tolerant Low Zone 4b
forked rush Juncus dichotomus Grass or grass-like 2.9 ft Sun–part shade Medium Zone 8b
fragrant flatsedge Cyperus odoratus Grass or grass-like 2 ft Sun Medium Zone 11b
frost grape Vitis vulpina Vine 83 ft Sun–part shade Medium Zone 5a
giant cane Arundinaria gigantea Shrub 25 ft Sun Medium Zone 5a
giant cutgrass Zizaniopsis miliacea Grass or grass-like 9 ft Sun High Zone 8b
grassleaf rush Juncus marginatus Grass or grass-like 2 ft Sun–part shade Medium Zone 5a
graybark grape Vitis cinerea Vine 50 ft Sun–part shade Medium Zone 6b
greater bladder sedge Carex intumescens Grass or grass-like 3 ft Shade-tolerant High Zone 4a
green ash Fraxinus pennsylvanica Tree 80 ft Shade-tolerant Medium Zone 2b
greenwhite sedge Carex albolutescens Grass or grass-like 3.9 ft Sun–part shade Medium Zone 3b
groundnut Apios americana Vine 1 ft Shade-tolerant Medium Zone 5a
Gulf Coast spikerush Eleocharis cellulosa Grass or grass-like 2.6 ft Sun High Zone 8b
halberdleaf rosemallow Hibiscus laevis Wildflower (forb) 8 ft Sun–part shade High Zone 6a
heartleaf peppervine Ampelopsis cordata Vine 2 ft Shade-tolerant Medium Zone 6b
hilograss Paspalum conjugatum Grass or grass-like 3 ft Shade-tolerant Medium Zone 8b
honeylocust Gleditsia triacanthos Tree 70 ft Sun Medium Zone 3b
hop sedge Carex lupulina Grass or grass-like 4.3 ft Sun–part shade Medium Zone 3b
Illinois bundleflower Desmanthus illinoensis Wildflower (forb) 3 ft Sun Medium Zone 5b
Indian woodoats Chasmanthium latifolium Grass or grass-like 4.6 ft Shade-tolerant Medium Zone 4a
Indianhemp Apocynum cannabinum Wildflower (forb) 3.3 ft Sun–part shade High Zone 3a
Jack in the pulpit Arisaema triphyllum Wildflower (forb) 1.5 ft Shade-tolerant High Zone 5b
Jesuit's bark Iva frutescens Wildflower (forb) 9 ft Sun High Zone 7b
jewelweed Impatiens capensis Wildflower (forb) 4.9 ft Shade-tolerant Medium Zone 10b
knotgrass Paspalum distichum Grass or grass-like 11 in Sun High Zone 6a
lanceleaf greenbrier Smilax smallii Vine 1 ft Shade-tolerant Medium Zone 6b
laurel oak Quercus laurifolia Tree 70 ft Shade-tolerant Medium Zone 7a
lavender thrift Limonium carolinianum Wildflower (forb) 2 ft Sun High Zone 6b
little barley Hordeum pusillum Grass or grass-like 1.2 ft Sun Medium Zone 10b
little bluestem Schizachyrium scoparium Grass or grass-like 3 ft Sun Low Zone 3b
live oak Quercus virginiana Tree 50 ft Sun–part shade Medium Zone 8a
loblolly pine Pinus taeda Tree 100 ft Sun High Zone 6b
longleaf woodoats Chasmanthium sessiliflorum Grass or grass-like 5 ft Sun Medium Zone 7a
longtom Paspalum denticulatum Grass or grass-like 2 ft Sun–part shade High Zone 8b
Malabar sprangletop Leptochloa fusca Grass or grass-like 3.3 ft Sun High Zone 3a
manyspike flatsedge Cyperus polystachyos Grass or grass-like 1.6 ft Sun Medium Zone 12a
marsh flatsedge Cyperus pseudovegetus Grass or grass-like 2.5 ft Sun High Zone 8a
marsh seedbox Ludwigia palustris Wildflower (forb) 2 in Sun High Zone 4a
Missouri ironweed Vernonia missurica Wildflower (forb) 6 ft Sun Medium Zone 4a
muscadine Vitis rotundifolia Vine 30 ft Sun–part shade Medium Zone 5b
needlegrass rush Juncus roemerianus Grass or grass-like 4.9 ft Sun High Zone 9a
nimblewill Muhlenbergia schreberi Grass or grass-like 3.2 ft Shade-tolerant Low Zone 4a
northern spicebush Lindera benzoin Tree 12 ft Sun–part shade Medium Zone 5a
Nuttall oak Quercus texana Tree 110 ft Sun Medium Zone 5b
panicledleaf ticktrefoil Desmodium paniculatum Wildflower (forb) 3 ft Sun–part shade Low Zone 6a
partridge pea Chamaecrista fasciculata Wildflower (forb) 2.4 ft Shade-tolerant Medium Zone 7a
pawpaw Asimina triloba Tree 25 ft Shade-tolerant Medium Zone 4b
pecan Carya illinoinensis Tree 120 ft Sun High Zone 5a
Pennsylvania bittercress Cardamine pensylvanica Wildflower (forb) 1.5 ft Shade-tolerant Medium Zone 4a
Pennsylvania smartweed Polygonum pensylvanicum Wildflower (forb) 3.9 ft Sun Medium Zone 10b
peppervine Nekemias arborea Vine 1 in Shade-tolerant Medium Zone 6a
Philadelphia fleabane Erigeron philadelphicus Wildflower (forb) 2.8 ft Sun–part shade Medium Zone 4b
pickerelweed Pontederia cordata Wildflower (forb) 3.2 ft Sun High Zone 5a
poorland flatsedge Cyperus compressus Grass or grass-like 1 ft Sun Medium Zone 11a
possumhaw Ilex decidua Tree 33 ft Shade-tolerant Medium Zone 5b
poverty rush Juncus tenuis Grass or grass-like 1.5 ft Sun–part shade Medium Zone 3b
prairie wedgescale Sphenopholis obtusata Grass or grass-like 3.2 ft Sun–part shade Medium Zone 3a
pumpkin ash Fraxinus profunda Tree 120 ft Sun–part shade High Zone 5a
purple lovegrass Eragrostis spectabilis Grass or grass-like 11 in Sun Low Zone 3a
purpletop tridens Tridens flavus Grass or grass-like 2.5 ft Sun Low Zone 5a
rattlesnake fern Botrychium virginianum Fern 1.4 ft Shade-tolerant Medium Zone 3b
ravenfoot sedge Carex crus-corvi Grass or grass-like 3 ft Sun–part shade Medium Zone 4b
red buckeye Aesculus pavia Tree 25 ft Shade-tolerant High Zone 5a
red maple Acer rubrum Tree 68 ft Sun–part shade High Zone 2b
red mulberry Morus rubra Tree 70 ft Shade-tolerant Medium Zone 4a
redroot flatsedge Cyperus erythrorhizos Grass or grass-like 2.5 ft Sun Medium Zone 11a
redtop panicgrass Panicum rigidulum Grass or grass-like 3.3 ft Sun High Zone 4a
rice cutgrass Leersia oryzoides Grass or grass-like 4.9 ft Sun High Zone 4a
roughfruit amaranth Amaranthus tuberculatus Wildflower (forb) 6.6 ft Sun High Zone 4a
roughleaf dogwood Cornus drummondii Tree 20 ft Sun–part shade Low Zone 4b
roundhead rush Juncus validus Grass or grass-like 3.2 ft Sun–part shade High Zone 7a
roundleaf greenbrier Smilax rotundifolia Vine 1 ft Sun Medium Zone 4a
salt heliotrope Heliotropium curassavicum Wildflower (forb) 1.2 ft Sun Medium Zone 4b
saltgrass Distichlis spicata Grass or grass-like 1.1 ft Sun Medium Zone 3b
saltmeadow cordgrass Spartina patens Grass or grass-like 2 ft Sun High Zone 7a
sand dropseed Sporobolus cryptandrus Grass or grass-like 3 ft Sun Low Zone 3b
sandbar willow Salix interior Tree 30 ft Sun — Zone 1a
sassafras Sassafras albidum Tree 75 ft Sun Low Zone 4b
saw greenbrier Smilax bona-nox Vine 4 ft Shade-tolerant Medium Zone 5b
sawtooth blackberry Rubus argutus Shrub 8.2 ft Sun Medium Zone 6a
seashore paspalum Paspalum vaginatum Grass or grass-like 1 in Sun High Zone 8b
sharpwing monkeyflower Mimulus alatus Wildflower (forb) 2.3 ft Shade-tolerant High Zone 5a
shoreline sedge Carex hyalinolepis Grass or grass-like 4 ft Sun–part shade High Zone 4b
shortbristle horned beaksedge Rhynchospora corniculata Grass or grass-like 6.6 ft Sun Medium Zone 6a
slippery elm Ulmus rubra Tree 85 ft Shade-tolerant High Zone 3a
smallspike false nettle Boehmeria cylindrica Wildflower (forb) 3.9 ft Shade-tolerant Medium Zone 4a
smooth beggartick Bidens laevis Wildflower (forb) 3.3 ft Sun–part shade High Zone 12b
smooth hedgenettle Stachys tenuifolia Wildflower (forb) 25 ft Shade-tolerant High Zone 4a
softstem bulrush Schoenoplectus tabernaemontani Grass or grass-like 9 ft Sun High Zone 3b
southern bayberry Morella caroliniensis Tree 7 ft Shade-tolerant Medium Zone 6a
southern catalpa Catalpa bignonioides Tree 66 ft Sun–part shade Low Zone 5b
southern magnolia Magnolia grandiflora Tree 100 ft Shade-tolerant High Zone 8a
southern red oak Quercus falcata Tree 75 ft Sun–part shade Medium Zone 6a
southern waternymph Najas guadalupensis Wildflower (forb) 1 ft Sun High Zone 3b
Spanish moss Tillandsia usneoides Vine — Shade-tolerant Medium Zone 9b
spring spiderlily Hymenocallis liriosme Wildflower (forb) 3 ft Sun Medium Zone 7b
squarestem spikerush Eleocharis quadrangulata Grass or grass-like 4 ft Sun High Zone 4b
St. Augustine grass Stenotaphrum secundatum Grass or grass-like 11 in Shade-tolerant High Zone 7b
stalkless yellowcress Rorippa sessiliflora Wildflower (forb) 1.5 ft Sun–part shade High Zone 12b
stiff marsh bedstraw Galium tinctorium Wildflower (forb) 10 in Shade-tolerant High Zone 4a
strawcolored flatsedge Cyperus strigosus Grass or grass-like 3.2 ft Sun Medium Zone 4a
sturdy bulrush Bolboschoenus robustus Grass or grass-like 4.9 ft Sun High Zone 8a
sugarberry Celtis laevigata Tree 80 ft Shade-tolerant High Zone 5a
sugarcane plumegrass Saccharum giganteum Grass or grass-like 9.8 ft Sun Medium Zone 4b
swamp chestnut oak Quercus michauxii Tree 80 ft Sun Medium Zone 5a
swamp sawgrass Cladium mariscus Grass or grass-like 8.2 ft Sun Medium Zone 8b
swamp tupelo Nyssa biflora Tree 115 ft Sun High Zone 5b
sweetgum Liquidambar styraciflua Tree 100 ft Sun High Zone 5a
sweetscent Pluchea odorata Wildflower (forb) 4.9 ft Sun Medium Zone 6a
switchgrass Panicum virgatum Grass or grass-like 5 ft Sun Medium Zone 3a
taperleaf water horehound Lycopus rubellus Wildflower (forb) 1.6 ft Shade-tolerant High Zone 5a
tapertip rush Juncus acuminatus Grass or grass-like 3 ft Sun–part shade High Zone 4a
teal lovegrass Eragrostis hypnoides Grass or grass-like 4 in Sun High Zone 3b
thinfruit sedge Carex flaccosperma Grass or grass-like 1 ft Shade-tolerant High Zone 6b
toad rush Juncus bufonius Grass or grass-like 1 ft Sun Medium Zone 12a
trumpet creeper Campsis radicans Vine 2 ft Sun Low Zone 6a
turkey tangle fogfruit Phyla nodiflora Wildflower (forb) 2 in Sun–part shade Low Zone 5b
valley redstem Ammannia coccinea Wildflower (forb) 1.6 ft Sun Medium Zone 3b
variable panicgrass Dichanthelium commutatum Grass or grass-like 4.9 ft Sun–part shade Low Zone 4b
Virginia creeper Parthenocissus quinquefolia Vine 1 ft Sun–part shade Low Zone 4b
Virginia dayflower Commelina virginica Wildflower (forb) 3.5 ft Shade-tolerant Medium Zone 5b
Virginia iris Iris virginica Wildflower (forb) 3.3 ft Shade-tolerant High Zone 8b
Virginia sweetspire Itea virginica Shrub 10 ft Shade-tolerant High Zone 5a
Virginia water horehound Lycopus virginicus Wildflower (forb) 4 ft Shade-tolerant High Zone 4a
Virginia wildrye Elymus virginicus Grass or grass-like 2.5 ft Shade-tolerant Medium Zone 4b
water hickory Carya aquatica Tree 85 ft Sun–part shade Medium Zone 5b
water locust Gleditsia aquatica Tree 40 ft Sun–part shade — Zone 10a
water oak Quercus nigra Tree 90 ft Sun High Zone 5a
water tupelo Nyssa aquatica Tree 100 ft Sun High Zone 5a
wax myrtle Morella cerifera Tree 10 ft Sun High Zone 7a
white avens Geum canadense Wildflower (forb) 3.9 ft Shade-tolerant Medium Zone 4a
white panicle aster Symphyotrichum lanceolatum Wildflower (forb) 6 ft Sun–part shade High Zone 3b
whitegrass Leersia virginica Grass or grass-like 3.9 ft Shade-tolerant Medium Zone 3a
widgeongrass Ruppia maritima Wildflower (forb) 2 in Sun High Zone 7a
willow oak Quercus phellos Tree 100 ft Sun High Zone 5a
winged elm Ulmus alata Tree 65 ft Shade-tolerant Medium Zone 5b
winged sumac Rhus copallinum Tree 8 ft Sun Low Zone 4b
wingleaf primrose-willow Ludwigia decurrens Wildflower (forb) 4.5 ft Shade-tolerant High Zone 8a
winter bentgrass Agrostis hyemalis Grass or grass-like 3.5 ft Sun–part shade High Zone 4a
woodland bluegrass Poa sylvestris Grass or grass-like 3 ft Shade-tolerant High Zone 4a
woolgrass Scirpus cyperinus Grass or grass-like 4.9 ft Sun–part shade High Zone 4a
yaupon Ilex vomitoria Tree 25 ft Sun–part shade Low Zone 8a
yellow flatsedge Cyperus flavescens Grass or grass-like 2 ft Sun Medium Zone 11b
yellow passionflower Passiflora lutea Vine 16 ft Shade-tolerant Low Zone 5a
yellow waterlily Nymphaea mexicana Wildflower (forb) — Sun High Zone 7a

Other native species recorded here 244

PLANTS has no growing records for these, so light, moisture, height and zone filters cannot include them. Many are wild species seldom sold by nurseries.

  • Alabama supplejack Berchemia scandens
  • Allegheny monkeyflower Mimulus ringens
  • Amazon sprangletop Leptochloa panicoides
  • amberique-bean Strophostyles helvola
  • American black nightshade Solanum americanum
  • American buckwheat vine Brunnichia ovata
  • American burnweed Erechtites hieraciifolius
  • American featherfoil Hottonia inflata
  • American lopseed Phryma leptostachya
  • anglestem primrose-willow Ludwigia leptocarpa
  • angularfruit milkvine Matelea gonocarpos
  • annual marsh elder Iva annua
  • annual ragweed Ambrosia artemisiifolia
  • aquatic milkweed Asclepias perennis
  • axilflower Mecardonia acuminata
  • Baldwin's flatsedge Cyperus croceus
  • beaked cornsalad Valerianella radiata
  • beaked panicgrass Panicum anceps
  • bearded flatsedge Cyperus squarrosus
  • bigbract verbena Verbena bracteata
  • bigpod sesbania Sesbania herbacea
  • bigseed alfalfa dodder Cuscuta indecora
  • blackseed plantain Plantago rugelii
  • blue mudplantain Heteranthera limosa
  • bluejacket Tradescantia ohiensis
  • bluestem pricklypoppy Argemone albiflora
  • bog yellowcress Rorippa palustris
  • Bosc's mille graines Oldenlandia boscii
  • bottomland aster Symphyotrichum ontarionis
  • bristly greenbrier Smilax tamnoides
  • bristly scaleseed Spermolepis echinata
  • broadwing sedge Carex alata
  • brome-like sedge Carex bromoides
  • buffalo clover Trifolium reflexum
  • bulltongue arrowhead Sagittaria lancifolia
  • bushy knotweed Polygonum ramosissimum
  • camphor pluchea Pluchea camphorata
  • Canada toadflax Nuttallanthus canadensis
  • Canadian blacksnakeroot Sanicula canadensis
  • Canadian clearweed Pilea pumila
  • Canadian woodnettle Laportea canadensis
  • Carolina canarygrass Phalaris caroliniana
  • Carolina coralbead Cocculus carolinus
  • Carolina fimbry Fimbristylis caroliniana
  • Carolina geranium Geranium carolinianum
  • Carolina horsenettle Solanum carolinense
  • Carolina mosquitofern Azolla caroliniana
  • Carolina ponysfoot Dichondra carolinensis
  • carpenter's square Scrophularia marilandica
  • chaffweed Anagallis minima
  • chairmaker's bulrush Schoenoplectus americanus
  • Cherokee sedge Carex cherokeensis
  • chinquapin Castanea pumila
  • Christmas fern Polystichum acrostichoides
  • clammy hedgehyssop Gratiola neglecta
  • clasping Venus' looking-glass Triodanis perfoliata
  • climbing dogbane Trachelospermum difforme
  • coastal sandbur Cenchrus spinifex
  • Columbian watermeal Wolffia columbiana
  • common carpetgrass Axonopus fissifolius
  • common threeseed mercury Acalypha rhomboidea
  • common yellow oxalis Oxalis stricta
  • cone-cup spikerush Eleocharis tuberculosa
  • creeping burhead Echinodorus cordifolius
  • creeping eryngo Eryngium prostratum
  • creeping lovegrass Neeragrostis reptans
  • crested saltbush Atriplex cristata
  • crossvine Bignonia capreolata
  • crowpoison Nothoscordum bivalve
  • Cuman ragweed Ambrosia psilostachya
  • curlytop knotweed Polygonum lapathifolium
  • cutleaf evening primrose Oenothera laciniata
  • cutleaf grapefern Botrychium dissectum
  • cutleaf groundcherry Physalis angulata
  • cutleaf watermilfoil Myriophyllum pinnatum
  • cylindricfruit primrose-willow Ludwigia glandulosa
  • cypress panicgrass Dichanthelium dichotomum
  • denseflower knotweed Polygonum glabrum
  • desert horsepurslane Trianthema portulacastrum
  • dogfennel Eupatorium capillifolium
  • Drummond's aster Symphyotrichum drummondii
  • dwarf horseweed Conyza ramosissima
  • eastern blue-eyed grass Sisyrinchium atlanticum
  • eastern bluestar Amsonia tabernaemontana
  • eastern fox sedge Carex triangularis
  • eastern grasswort Lilaeopsis chinensis
  • eastern marsh fern Thelypteris palustris
  • eastern poison ivy Toxicodendron radicans
  • ebony spleenwort Asplenium platyneuron
  • erect centella Centella erecta
  • eyebane Chamaesyce nutans
  • false hop sedge Carex lupuliformis
  • floating marshpennywort Hydrocotyle ranunculoides
  • Florida mudmidget Wolffiella gladiata
  • giant ironweed Vernonia gigantea
  • globe flatsedge Cyperus echinatus
  • grassleaf mudplantain Heteranthera dubia
  • grassy arrowhead Sagittaria graminea
  • great ragweed Ambrosia trifida
  • green carpetweed Mollugo verticillata
  • green dragon Arisaema dracontium
  • Guadeloupe cucumber Melothria pendula
  • gum bully Sideroxylon lanuginosum
  • hairy clustervine Jacquemontia tamnifolia
  • hairy lettuce Lactuca hirsuta
  • hairy sunflower Helianthus hirsutus
  • hairy waterclover Marsilea vestita
  • hairyfruit chervil Chaerophyllum tainturieri
  • heartleaf nettle Urtica chamaedryoides
  • heartleaf skullcap Scutellaria ovata
  • Heller's rosette grass Dichanthelium oligosanthes
  • herb of grace Bacopa monnieri
  • herbwilliam Ptilimnium capillaceum
  • hooded arrowhead Sagittaria calycina
  • humped bladderwort Utricularia gibba
  • husk tomato Physalis pubescens
  • Juda's bush Iresine rhizomatosa
  • jumpseed Polygonum virginianum
  • juniper leaf Polypremum procumbens
  • keeled bulrush Isolepis carinata
  • kidneyleaf mudplantain Heteranthera reniformis
  • lakecress Neobeckia aquatica
  • lanceleaf fogfruit Phyla lanceolata
  • lateflowering thoroughwort Eupatorium serotinum
  • lax hornpod Mitreola petiolata
  • Leavenworth's sedge Carex leavenworthii
  • little duckweed Lemna obscura
  • lizard's tail Saururus cernuus
  • Long's sedge Carex longii
  • Louisiana vetch Vicia ludoviciana
  • low spearwort Ranunculus pusillus
  • lowland rotala Rotala ramosior
  • Madagascar dropseed Sporobolus pyramidatus
  • maidencane Panicum hemitomon
  • manyflower marshpennywort Hydrocotyle umbellata
  • marsh bristlegrass Setaria parviflora
  • marsh fimbry Fimbristylis castanea
  • marsh lady's tresses Spiranthes odorata
  • meadow garlic Allium canadense
  • Mexican plum Prunus mexicana
  • mucronate sprangletop Leptochloa panicea
  • mudbank crowngrass Paspalum dissectum
  • nakedflower ticktrefoil Desmodium nudiflorum
  • narrowleaf paleseed Leucospora multifida
  • neckweed Veronica peregrina
  • netted chainfern Woodwardia areolata
  • nits and lice Hypericum drummondii
  • oneseed bur cucumber Sicyos angulatus
  • openflower rosette grass Dichanthelium laxiflorum
  • Pennsylvania everlasting Gamochaeta pensylvanica
  • Pennsylvania pellitory Parietaria pensylvanica
  • perennial saltmarsh aster Symphyotrichum tenuifolium
  • pillpod sandmat Chamaesyce hirta
  • pink fuzzybean Strophostyles umbellata
  • pink thoroughwort Fleischmannia incarnata
  • pinkladies Oenothera speciosa
  • pitseed goosefoot Chenopodium berlandieri
  • potato dwarfdandelion Krigia dandelion
  • prairie spiderwort Tradescantia occidentalis
  • prairie tea Croton monanthogynus
  • prickly fanpetals Sida spinosa
  • prostrate sandmat Chamaesyce prostrata
  • purple false foxglove Agalinis purpurea
  • purple passionflower Passiflora incarnata
  • rabbit-tobacco Pseudognaphalium obtusifolium
  • red lovegrass Eragrostis secundiflora
  • Red River scaleseed Spermolepis inermis
  • redseed plantain Plantago rhodosperma
  • reflexed sedge Carex retroflexa
  • rose of Plymouth Sabatia stellaris
  • rough barnyardgrass Echinochloa muricata
  • rough false pennyroyal Hedeoma hispida
  • roundfruit hedgehyssop Gratiola virginiana
  • roundseed panicgrass Dichanthelium sphaerocarpon
  • salt sandspurry Spergularia salina
  • saltmarsh false foxglove Agalinis maritima
  • sand bittercress Cardamine parviflora
  • sand spikerush Eleocharis montevidensis
  • scaldweed Cuscuta gronovii
  • shortleaf spikesedge Kyllinga brevifolia
  • sixweeks fescue Vulpia octoflora
  • slender fimbry Fimbristylis autumnalis
  • slimpod rush Juncus diffusissimus
  • small skullcap Scutellaria parvula
  • small Venus' looking-glass Triodanis biflora
  • smallflower baby blue eyes Nemophila aphylla
  • smallflower halfchaff sedge Lipocarpha micrantha
  • smooth false buttonweed Spermacoce glabra
  • smooth white oldfield aster Symphyotrichum racemosum
  • sneezeweed Helenium amarum
  • soft-hair marbleseed Onosmodium bejariense
  • sorrelvine Cissus trifoliata
  • southeastern wildrye Elymus glabriflorus
  • southern annual saltmarsh aster Symphyotrichum divaricatum
  • southern cattail Typha domingensis
  • Spanish needles Bidens bipinnata
  • sparselobe grapefern Botrychium biternatum
  • spoonleaf purple everlasting Gamochaeta purpurea
  • spotted sandmat Chamaesyce maculata
  • spreading sandmat Chamaesyce humistrata
  • spring forget-me-not Myosotis verna
  • St. Andrew's cross Hypericum hypericoides
  • swamp dock Rumex verticillatus
  • swamp leather flower Clematis crispa
  • swamp wedgescale Sphenopholis pensylvanica
  • tall thoroughwort Eupatorium altissimum
  • tapered rosette grass Dichanthelium acuminatum
  • terrestrial water-starwort Callitriche terrestris
  • Texas bergia Bergia texana
  • Texas star Sabatia campestris
  • Texas vervain Verbena halei
  • toothed spurge Euphorbia dentata
  • trailing pearlwort Sagina decumbens
  • tropical flatsedge Cyperus surinamensis
  • tuberous stoneseed Lithospermum tuberosum
  • tufted lovegrass Eragrostis pectinacea
  • Vahl's fimbry Fimbristylis vahlii
  • velvetweed Oenothera curtiflora
  • Virginia buttonweed Diodia virginiana
  • Virginia chainfern Woodwardia virginica
  • Virginia pepperweed Lepidium virginicum
  • Virginia plantain Plantago virginica
  • Virginia saltmarsh mallow Kosteletzkya virginica
  • Virginia springbeauty Claytonia virginica
  • wand lythrum Lythrum lineare
  • warty spurge Euphorbia spathulata
  • water lettuce Pistia stratiotes
  • weak rush Juncus debilis
  • whisk fern Psilotum nudum
  • white crownbeard Verbesina virginica
  • white snakeroot Ageratina altissima
  • white vervain Verbena urticifolia
  • whitemouth dayflower Commelina erecta
  • whitestar Ipomoea lacunosa
  • whorled marshpennywort Hydrocotyle verticillata
  • wild yam Dioscorea villosa
  • willowleaf aster Symphyotrichum praealtum
  • winged lythrum Lythrum alatum
  • wingstem Verbesina alternifolia
  • witchgrass Panicum capillare
  • woodland lettuce Lactuca floridana
  • yellow thistle Cirsium horridulum
  • yellowseed false pimpernel Lindernia dubia
  • zigzag spiderwort Tradescantia subaspera
Also listed as native and introduced here 3

PLANTS labels these species both native and introduced in this state: some forms are native and others were brought in from elsewhere. Most gardeners should choose plants from the main list.

  • common reedPhragmites australis
  • hedge false bindweedCalystegia sepium
  • Mexican teaDysphania ambrosioides

Compared with Louisiana

The typical county is the median of the 64 Louisiana counties with PLANTS county records; the statewide figure counts every species native anywhere in the state. More species is not better or worse: counties differ in size, habitat and how thoroughly they have been surveyed.

Native species counts, St. Mary Parish and Louisiana
MeasureSt. Mary ParishTypical countyStatewide
Native species 470 587 1,420
Garden-ready natives 226 271 520
Tree 66 — 151
Shrub 7 — 54
Wildflower (forb) 227 — 761
Grass or grass-like 120 — 342
Vine 39 — 74
Fern 11 — 38

Neighboring counties

Counties that share a ZIP code with St. Mary Parish.

Look up another ZIP

Matches your ZIP to the county it mostly lies in, then lists the plants recorded as native to your state (Kew’s World Checklist and USDA PLANTS) and recorded in that county by USDA PLANTS.

Source & data date

Source
USDA NRCS PLANTS Database: county distribution records, native status and plant characteristics. CC0 (public domain dedication, per the data.gov catalog record).
Kew’s World Checklist of Vascular Plants (WCVP): native or introduced status by state. CC BY 3.0.
USGS US-RIIS (ver. 2.0): species listed as introduced are excluded. CC0.
Citation
USDA, NRCS. 2026. The PLANTS Database (https://plants.usda.gov, 11/04/2026). National Plant Data Team, Greensboro, NC USA.
Govaerts R. (ed.) (2026). WCVP: World Checklist of Vascular Plants. Facilitated by the Royal Botanic Gardens, Kew. Data file dated 2026-06-04, http://sftp.kew.org/pub/data-repositories/WCVP/ (retrieved 2026-11-04). Paper: Govaerts R. et al. (2021) The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. Scientific Data 8, 215.
Data date
Retrieved from PLANTS on November 4, 2026; WCVP data file dated June 4, 2026.
Zones
USDA Plant Hardiness Zone Map (2023) ZIP table: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed November 3, 2026. Plant zones on this site are our estimate, not the official map.
Scope
St. Mary Parish (county FIPS 22101), Louisiana. 470 native species from PLANTS county distribution records; garden-ready = species with a PLANTS characteristics record.
Method
A species is listed when it is recorded as native to the state in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in the county by USDA PLANTS. Species PLANTS labels both native and introduced are listed separately. Full method · All sources

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