Native plants · Louisiana

Native plants of St. Bernard Parish

267 plant species are recorded as native to Louisiana in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in St. Bernard Parish by USDA PLANTS. 139 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. Bernard Parish, Louisiana

Native species: 267 Typical Louisiana county: 587 (median of 64 counties)
Garden-ready natives: 139 Typical Louisiana county: 271
Share by type (all 267 native species): Percent of the 267 native species in each growth type

Tree 10% (28)
Shrub 3% (8)
Wildflower (forb) 45% (120)
Grass or grass-like 31% (84)
Vine 9% (23)
Fern 1% (4)

Wildflowers make up the largest share of the native list (45%), followed by grasses and grass-like plants (31%).

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

Garden-ready natives 139

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

Garden-ready native plants of St. Bernard Parish, Louisiana
Plant	Type	Height	Light	Water use	Hardy to
American beautyberry Callicarpa americana	Shrub	6 ft	Sun–part shade	Low	Zone 6b
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 pokeweed Phytolacca americana	Wildflower (forb)	7.3 ft	Shade-tolerant	Medium	Zone 4a
American spongeplant Limnobium spongia	Wildflower (forb)	6 in	Sun	High	Zone 5a
bald cypress Taxodium distichum	Tree	130 ft	Sun–part shade	High	Zone 5b
bayhops Ipomoea pes-caprae	Vine	1 ft	Sun–part shade	Medium	Zone 9a
big cordgrass Spartina cynosuroides	Grass or grass-like	8 ft	Sun	High	Zone 7a
bighead rush Juncus megacephalus	Grass or grass-like	3.1 ft	Shade-tolerant	High	Zone 8b
bitter panicgrass Panicum amarum	Grass or grass-like	5 ft	Sun	Medium	Zone 5b
black cherry Prunus serotina	Tree	80 ft	Sun	Medium	Zone 4a
black mangrove Avicennia germinans	Tree	30 ft	Sun	High	Zone 8a
black willow Salix nigra	Tree	100 ft	Sun	High	Zone 1b
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
broadleaf cattail Typha latifolia	Wildflower (forb)	5 ft	Sun–part shade	High	Zone 3b
broomsedge bluestem Andropogon virginicus	Grass or grass-like	3 ft	Sun	Medium	Zone 5b
brownseed paspalum Paspalum plicatulum	Grass or grass-like	3.3 ft	Sun–part shade	Low	Zone 8a
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
Carolina desert-thorn Lycium carolinianum	Shrub	9 ft	Sun	High	Zone 9a
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
common buttonbush Cephalanthus occidentalis	Tree	15 ft	Shade-tolerant	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 threesquare Schoenoplectus pungens	Grass or grass-like	4.9 ft	Sun	High	Zone 3b
coon's tail Ceratophyllum demersum	Wildflower (forb)	—	Sun–part shade	High	Zone 3b
crimsoneyed rosemallow Hibiscus moscheutos	Wildflower (forb)	6.6 ft	Sun	High	Zone 6a
cursed buttercup Ranunculus sceleratus	Wildflower (forb)	2 ft	Shade-tolerant	High	Zone 12b
dahoon Ilex cassine	Tree	26 ft	Shade-tolerant	High	Zone 8b
delta arrowhead Sagittaria platyphylla	Wildflower (forb)	3 ft	Sun	High	Zone 6a
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
eastern baccharis Baccharis halimifolia	Tree	10 ft	Sun–part shade	High	Zone 7a
eastern cottonwood Populus deltoides	Tree	190 ft	Sun	High	Zone 3a
eastern gamagrass Tripsacum dactyloides	Grass or grass-like	5 ft	Sun	High	Zone 5a
eastern redcedar Juniperus virginiana	Tree	50 ft	Sun–part shade	Low	Zone 3a
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
fox sedge Carex vulpinoidea	Grass or grass-like	3.2 ft	Sun–part shade	Medium	Zone 3b
fragrant flatsedge Cyperus odoratus	Grass or grass-like	2 ft	Sun	Medium	Zone 11b
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
graybark grape Vitis cinerea	Vine	50 ft	Sun–part shade	Medium	Zone 6b
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
gulf cordgrass Spartina spartinae	Grass or grass-like	6.6 ft	Sun	Medium	Zone 9a
halberdleaf rosemallow Hibiscus laevis	Wildflower (forb)	8 ft	Sun–part shade	High	Zone 6a
haspan flatsedge Cyperus haspan	Grass or grass-like	3.2 ft	Sun	Medium	Zone 8a
heartleaf peppervine Ampelopsis cordata	Vine	2 ft	Shade-tolerant	Medium	Zone 6b
honeylocust Gleditsia triacanthos	Tree	70 ft	Sun	Medium	Zone 3b
horsetail paspalum Paspalum fluitans	Grass or grass-like	2.5 ft	Sun–part shade	High	Zone 5a
Illinois bundleflower Desmanthus illinoensis	Wildflower (forb)	3 ft	Sun	Medium	Zone 5b
Jesuit's bark Iva frutescens	Wildflower (forb)	9 ft	Sun	High	Zone 7b
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
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
live oak Quercus virginiana	Tree	50 ft	Sun–part shade	Medium	Zone 8a
longtom Paspalum denticulatum	Grass or grass-like	2 ft	Sun–part shade	High	Zone 8b
manyspike flatsedge Cyperus polystachyos	Grass or grass-like	1.6 ft	Sun	Medium	Zone 12a
marsh seedbox Ludwigia palustris	Wildflower (forb)	2 in	Sun	High	Zone 4a
narrowleaf blue-eyed grass Sisyrinchium angustifolium	Wildflower (forb)	2 ft	Sun–part shade	Medium	Zone 7a
needlegrass rush Juncus roemerianus	Grass or grass-like	4.9 ft	Sun	High	Zone 9a
needlepod rush Juncus scirpoides	Grass or grass-like	3 ft	Shade-tolerant	High	Zone 7a
nimblewill Muhlenbergia schreberi	Grass or grass-like	3.2 ft	Shade-tolerant	Low	Zone 4a
oval-leaf sedge Carex cephalophora	Grass or grass-like	2.6 ft	Sun–part shade	Low	Zone 4a
pecan Carya illinoinensis	Tree	120 ft	Sun	High	Zone 5a
Pennsylvania bittercress Cardamine pensylvanica	Wildflower (forb)	1.5 ft	Shade-tolerant	Medium	Zone 4a
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
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
ravenfoot sedge Carex crus-corvi	Grass or grass-like	3 ft	Sun–part shade	Medium	Zone 4b
red maple Acer rubrum	Tree	68 ft	Sun–part shade	High	Zone 2b
redroot flatsedge Cyperus erythrorhizos	Grass or grass-like	2.5 ft	Sun	Medium	Zone 11a
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
saltwater false willow Baccharis angustifolia	Shrub	13 ft	Sun	High	Zone 8b
sandbar willow Salix interior	Tree	30 ft	Sun	—	Zone 1a
saw greenbrier Smilax bona-nox	Vine	4 ft	Shade-tolerant	Medium	Zone 5b
sawtooth sunflower Helianthus grosseserratus	Wildflower (forb)	5 ft	Sun	Medium	Zone 3a
seaoats Uniola paniculata	Grass or grass-like	6 ft	Sun	Low	Zone 8a
seashore dropseed Sporobolus virginicus	Grass or grass-like	2 ft	Sun–part shade	Low	Zone 9a
seashore paspalum Paspalum vaginatum	Grass or grass-like	1 in	Sun	High	Zone 8b
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 cordgrass Spartina alterniflora	Grass or grass-like	3.5 ft	Sun	High	Zone 5a
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 magnolia Magnolia grandiflora	Tree	100 ft	Shade-tolerant	High	Zone 8a
Spanish moss Tillandsia usneoides	Vine	—	Shade-tolerant	Medium	Zone 9b
spring spiderlily Hymenocallis liriosme	Wildflower (forb)	3 ft	Sun	Medium	Zone 7b
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
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
summer grape Vitis aestivalis	Vine	30 ft	Shade-tolerant	Medium	Zone 5a
swamp sawgrass Cladium mariscus	Grass or grass-like	8.2 ft	Sun	Medium	Zone 8b
swamp smartweed Polygonum hydropiperoides	Wildflower (forb)	—	Sun	Medium	Zone 10b
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
tapertip flatsedge Cyperus acuminatus	Grass or grass-like	1.3 ft	Sun–part shade	High	Zone 3b
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
turtleweed Batis maritima	Shrub	1 in	Sun	Medium	Zone 9a
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 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 oak Quercus nigra	Tree	90 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
widgeongrass Ruppia maritima	Wildflower (forb)	2 in	Sun	High	Zone 7a
winter bentgrass Agrostis hyemalis	Grass or grass-like	3.5 ft	Sun–part shade	High	Zone 4a
yaupon Ilex vomitoria	Tree	25 ft	Sun–part shade	Low	Zone 8a
yellow passionflower Passiflora lutea	Vine	16 ft	Shade-tolerant	Low	Zone 5a

Other native species recorded here 128

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
Amazon sprangletop Leptochloa panicoides
amberique-bean Strophostyles helvola
American black nightshade Solanum americanum
American buckwheat vine Brunnichia ovata
American burnweed Erechtites hieraciifolius
American hogpeanut Amphicarpaea bracteata
anglestem primrose-willow Ludwigia leptocarpa
annual marsh elder Iva annua
annual seepweed Suaeda linearis
Baldwin's flatsedge Cyperus croceus
beaked cornsalad Valerianella radiata
beaked panicgrass Panicum anceps
bigpod sesbania Sesbania herbacea
bigseed alfalfa dodder Cuscuta indecora
blackseed plantain Plantago rugelii
bog yellowcress Rorippa palustris
Canadian blacksnakeroot Sanicula canadensis
Carolina canarygrass Phalaris caroliniana
Carolina fimbry Fimbristylis caroliniana
Carolina geranium Geranium carolinianum
Carolina mosquitofern Azolla caroliniana
Carolina ponysfoot Dichondra carolinensis
catchfly prairie gentian Eustoma exaltatum
chaffweed Anagallis minima
chairmaker's bulrush Schoenoplectus americanus
Cherokee sedge Carex cherokeensis
coastal lovegrass Eragrostis refracta
common carpetgrass Axonopus fissifolius
creeping burhead Echinodorus cordifolius
creeping spikerush Eleocharis fallax
crested saltbush Atriplex cristata
crossvine Bignonia capreolata
curlytop knotweed Polygonum lapathifolium
cutleaf evening primrose Oenothera laciniata
denseflower knotweed Polygonum glabrum
Dillenius' ticktrefoil Desmodium glabellum
ditch rabbitsfoot grass Polypogon interruptus
dogfennel Eupatorium capillifolium
eastern blue-eyed grass Sisyrinchium atlanticum
eastern grasswort Lilaeopsis chinensis
ebony spleenwort Asplenium platyneuron
Elliott's bluestem Andropogon gyrans
eyebane Chamaesyce nutans
field lovegrass Eragrostis elliottii
Florida mudmidget Wolffiella gladiata
giant bristlegrass Setaria magna
giant ironweed Vernonia gigantea
great ragweed Ambrosia trifida
green dragon Arisaema dracontium
greenvein lady's tresses Spiranthes praecox
Guadeloupe cucumber Melothria pendula
hairy waterclover Marsilea vestita
hairyfruit chervil Chaerophyllum tainturieri
hairyseed paspalum Paspalum pubiflorum
heartleaf nettle Urtica chamaedryoides
heartleaf skullcap Scutellaria ovata
herb of grace Bacopa monnieri
herbwilliam Ptilimnium capillaceum
horned pondweed Zannichellia palustris
jumpseed Polygonum virginianum
juniper leaf Polypremum procumbens
lanceleaf fogfruit Phyla lanceolata
lateflowering thoroughwort Eupatorium serotinum
lax hornpod Mitreola petiolata
Louisiana vetch Vicia ludoviciana
low spearwort Ranunculus pusillus
maidencane Panicum hemitomon
marsh bristlegrass Setaria parviflora
marsh fimbry Fimbristylis castanea
meadow garlic Allium canadense
mudbank crowngrass Paspalum dissectum
neckweed Veronica peregrina
Pennsylvania everlasting Gamochaeta pensylvanica
Pennsylvania pellitory Parietaria pensylvanica
perennial saltmarsh aster Symphyotrichum tenuifolium
pineland threeseed mercury Acalypha ostryifolia
pinkladies Oenothera speciosa
pitseed goosefoot Chenopodium berlandieri
potato dwarfdandelion Krigia dandelion
prairie spiderwort Tradescantia occidentalis
prickly fanpetals Sida spinosa
prostrate sandmat Chamaesyce prostrata
purple false foxglove Agalinis purpurea
purple sandgrass Triplasis purpurea
red lovegrass Eragrostis secundiflora
rose of Plymouth Sabatia stellaris
roundfruit hedgehyssop Gratiola virginiana
salt sandspurry Spergularia salina
saltmarsh false foxglove Agalinis maritima
sand bittercress Cardamine parviflora
sand spikerush Eleocharis montevidensis
sanddune sandbur Cenchrus tribuloides
sandpaper vervain Verbena scabra
shortleaf spikesedge Kyllinga brevifolia
slender seapurslane Sesuvium maritimum
small Venus' looking-glass Triodanis biflora
smallhead doll's daisy Boltonia diffusa
smooth ticktrefoil Desmodium laevigatum
soft-hair marbleseed Onosmodium bejariense
southern annual saltmarsh aster Symphyotrichum divaricatum
southern cutgrass Leersia hexandra
southern dewberry Rubus trivialis
sparselobe grapefern Botrychium biternatum
spoonleaf purple everlasting Gamochaeta purpurea
spotted sandmat Chamaesyce maculata
spotted water hemlock Cicuta maculata
spring forget-me-not Myosotis verna
St. Andrew's cross Hypericum hypericoides
swamp dock Rumex verticillatus
swamp leather flower Clematis crispa
thin paspalum Paspalum setaceum
thymeleaf pinweed Lechea minor
tropical flatsedge Cyperus surinamensis
tufted lovegrass Eragrostis pectinacea
Vahl's fimbry Fimbristylis vahlii
Virginia buttonweed Diodia virginiana
Virginia pepperweed Lepidium virginicum
Virginia plantain Plantago virginica
Virginia saltmarsh mallow Kosteletzkya virginica
Virginia winged rockcress Sibara virginica
white crownbeard Verbesina virginica
whorled marshpennywort Hydrocotyle verticillata
willowleaf aster Symphyotrichum praealtum
winged lythrum Lythrum alatum
witchgrass Panicum capillare
woodland lettuce Lactuca floridana
yellow thistle Cirsium horridulum

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. Bernard Parish and Louisiana
Measure	St. Bernard Parish	Typical county	Statewide
Native species	267	587	1,420
Garden-ready natives	139	271	520
Tree	28	—	151
Shrub	8	—	54
Wildflower (forb)	120	—	761
Grass or grass-like	84	—	342
Vine	23	—	74
Fern	4	—	38

Neighboring counties

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

Plaquemines Parish, LA 131 garden-ready

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. Bernard Parish (county FIPS 22087), Louisiana. 267 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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