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Native plants · Illinois

Native plants of Clinton County

372 plant species are recorded as native to Illinois in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in Clinton County by USDA PLANTS. 188 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

Clinton County, Illinois

Native species
372 Typical Illinois county: 641 (median of 102 counties)
Garden-ready natives
188 Typical Illinois county: 272
Share by type (all 372 native species)
Percent of the 372 native species in each growth type
Tree 14% (53)
Shrub 2% (7)
Wildflower (forb) 56% (209)
Grass or grass-like 21% (79)
Vine 5% (17)
Fern 2% (7)

Wildflowers make up the largest share of the native list (56%), followed by grasses and grass-like plants (21%).

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 6b (2023 map).

The native plant list

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

Garden-ready natives 188

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

Garden-ready native plants of Clinton County, Illinois
PlantType HeightLight Water useHardy to
American basswood Tilia americana Tree 100 ft Shade-tolerant Medium Zone 2b
American bittersweet Celastrus scandens Vine 15 ft Shade-tolerant High Zone 3b
American elm Ulmus americana Tree 120 ft Sun–part shade High Zone 2b
American hazelnut Corylus americana Shrub 10 ft Sun–part shade Medium Zone 4a
American lotus Nelumbo lutea Wildflower (forb) 3 ft Sun High Zone 3b
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 sycamore Platanus occidentalis Tree 100 ft Sun–part shade High Zone 4a
American water horehound Lycopus americanus Wildflower (forb) 1.8 ft Shade-tolerant High Zone 3b
American water plantain Alisma subcordatum Wildflower (forb) 6 in Sun High Zone 4a
Atlantic camas Camassia scilloides Wildflower (forb) 2.5 ft Shade-tolerant Medium Zone 4b
bearded beggarticks Bidens aristosa Wildflower (forb) 3.5 ft Sun–part shade High Zone 12b
big bluestem Andropogon gerardii Grass or grass-like 6 ft Sun Low Zone 2b
bitternut hickory Carya cordiformis Tree 75 ft Sun Medium Zone 2b
black cherry Prunus serotina Tree 80 ft Sun Medium Zone 4a
black oak Quercus velutina Tree 80 ft Sun–part shade Medium Zone 4a
black walnut Juglans nigra Tree 100 ft Sun High Zone 4b
black willow Salix nigra Tree 100 ft Sun High Zone 1b
blackeyed Susan Rudbeckia hirta Wildflower (forb) 1 ft Sun Medium Zone 5a
blackjack oak Quercus marilandica Tree 25 ft Sun Low Zone 6a
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
bluntleaf bedstraw Galium obtusum Wildflower (forb) 1.5 ft Shade-tolerant High Zone 4a
bog rush Juncus biflorus Grass or grass-like 3.5 ft Shade-tolerant High Zone 5b
boxelder Acer negundo Tree 60 ft Shade-tolerant Medium Zone 2b
bristly buttercup Ranunculus hispidus Wildflower (forb) 2.5 ft Shade-tolerant Medium Zone 4a
broadleaf cattail Typha latifolia Wildflower (forb) 5 ft Sun–part shade High Zone 3b
broom sedge Carex scoparia Grass or grass-like 2.5 ft Shade-tolerant High Zone 3b
broomsedge bluestem Andropogon virginicus Grass or grass-like 3 ft Sun Medium Zone 5b
bulbous bittercress Cardamine bulbosa Wildflower (forb) 1.4 ft Shade-tolerant Medium Zone 4a
bur oak Quercus macrocarpa Tree 100 ft Sun–part shade Medium Zone 3b
burningbush Euonymus atropurpureus Tree 10 ft Shade-tolerant Low —
Bush's sedge Carex bushii Grass or grass-like 2 ft Sun–part shade Medium Zone 5a
butterfly milkweed Asclepias tuberosa Wildflower (forb) 2 ft Sun Low Zone 4a
calico aster Symphyotrichum lateriflorum Wildflower (forb) 4 ft Sun Medium Zone 4a
Canada germander Teucrium canadense Wildflower (forb) 3.3 ft Sun–part shade High Zone 3a
Canada goldenrod Solidago canadensis Wildflower (forb) 3.5 ft Sun Medium Zone 3a
Canada wildrye Elymus canadensis Grass or grass-like 3 ft Shade-tolerant Medium Zone 3a
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 foxtail Alopecurus carolinianus Grass or grass-like 1.7 ft Sun Low Zone 3a
catchfly grass Leersia lenticularis Grass or grass-like 2.6 ft Sun Medium Zone 4a
cattail sedge Carex typhina Grass or grass-like 2 ft Shade-tolerant High Zone 4b
chinquapin oak Quercus muehlenbergii Tree 70 ft Sun Medium Zone 4a
climbing rose Rosa setigera Vine 16 ft Sun Low Zone 6a
cockspur hawthorn Crataegus crus-galli Tree 30 ft Sun Low Zone 4a
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 hackberry Celtis occidentalis Tree 60 ft Shade-tolerant Low Zone 2b
common persimmon Diospyros virginiana Tree 55 ft Shade-tolerant Medium Zone 5a
common selfheal Prunella vulgaris Wildflower (forb) 1.5 ft Sun–part shade Medium Zone 3b
common sneezeweed Helenium autumnale Wildflower (forb) 4.9 ft Sun Medium Zone 3a
composite dropseed Sporobolus compositus Grass or grass-like 3 ft Sun Low Zone 3b
coralberry Symphoricarpos orbiculatus Shrub 2 ft Sun–part shade High Zone 5a
crested sedge Carex cristatella Grass or grass-like 3 ft Shade-tolerant High Zone 4a
crimsoneyed rosemallow Hibiscus moscheutos Wildflower (forb) 6.6 ft Sun High Zone 6a
deertongue Dichanthelium clandestinum Grass or grass-like 2 ft Sun Low Zone 4a
ditch stonecrop Penthorum sedoides Wildflower (forb) 2.6 ft Sun–part shade Medium Zone 4b
dotted smartweed Polygonum punctatum Wildflower (forb) 3.2 ft Sun Medium Zone 10b
dwarf St. Johnswort Hypericum mutilum Wildflower (forb) 2.6 ft Sun–part shade Medium Zone 5a
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 narrowleaf sedge Carex amphibola Grass or grass-like 2 ft Shade-tolerant Medium Zone 7a
eastern redbud Cercis canadensis Tree 30 ft Shade-tolerant Low Zone 4b
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
field horsetail Equisetum arvense Fern 11 in Sun–part shade High Zone 3a
field paspalum Paspalum laeve Grass or grass-like 2.9 ft Sun–part shade Medium Zone 6a
flowering dogwood Cornus florida Tree 30 ft Shade-tolerant Low Zone 4b
fowl mannagrass Glyceria striata Grass or grass-like 5.7 ft Shade-tolerant Medium Zone 3b
fox sedge Carex vulpinoidea Grass or grass-like 3.2 ft Sun–part shade Medium Zone 3b
foxglove beardtongue Penstemon digitalis Wildflower (forb) 4 ft Shade-tolerant Low Zone 3b
fringeleaf wild petunia Ruellia humilis Wildflower (forb) 2.6 ft Shade-tolerant Low Zone 4a
gray goldenrod Solidago nemoralis Wildflower (forb) 2 ft Sun Medium Zone 4a
Gray's sedge Carex grayi Grass or grass-like 3 ft Shade-tolerant High Zone 4a
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
green bulrush Scirpus atrovirens Grass or grass-like 5.9 ft Sun Medium Zone 2a
hairy white oldfield aster Symphyotrichum pilosum Wildflower (forb) 3 ft Shade-tolerant Medium Zone 4a
halberdleaf rosemallow Hibiscus laevis Wildflower (forb) 8 ft Sun–part shade High Zone 6a
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
hophornbeam Ostrya virginiana Tree 45 ft Shade-tolerant Low Zone 3b
Indian woodoats Chasmanthium latifolium Grass or grass-like 4.6 ft Shade-tolerant Medium Zone 4a
Indiangrass Sorghastrum nutans Grass or grass-like 6 ft Sun Medium Zone 3b
Indianhemp Apocynum cannabinum Wildflower (forb) 3.3 ft Sun–part shade High Zone 3a
inland rush Juncus interior Grass or grass-like 3 ft Sun–part shade Medium Zone 3b
Jack in the pulpit Arisaema triphyllum Wildflower (forb) 1.5 ft Shade-tolerant High Zone 5b
Jerusalem artichoke Helianthus tuberosus Wildflower (forb) 9.8 ft Sun–part shade Low Zone 3a
jewelweed Impatiens capensis Wildflower (forb) 4.9 ft Shade-tolerant Medium Zone 10b
Kentucky coffeetree Gymnocladus dioicus Tree 100 ft Sun Medium Zone 4a
lanceleaf loosestrife Lysimachia lanceolata Wildflower (forb) 2.5 ft Shade-tolerant Medium Zone 5a
leafy pondweed Potamogeton foliosus Wildflower (forb) — Sun High Zone 3b
limestone wild petunia Ruellia strepens Wildflower (forb) 3.6 ft Shade-tolerant Low Zone 6a
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
littleleaf buttercup Ranunculus abortivus Wildflower (forb) 2.8 ft Shade-tolerant Medium Zone 3a
meadow evening primrose Oenothera pilosella Wildflower (forb) 2 ft Sun–part shade Medium Zone 5a
Missouri goldenrod Solidago missouriensis Wildflower (forb) 3 ft Sun–part shade Low Zone 3b
Missouri ironweed Vernonia missurica Wildflower (forb) 6 ft Sun Medium Zone 4a
mockernut hickory Carya tomentosa Tree 85 ft Sun–part shade Medium Zone 4a
Muskingum sedge Carex muskingumensis Grass or grass-like 3 ft Shade-tolerant High Zone 4a
New Jersey tea Ceanothus americanus Shrub 3 ft Shade-tolerant Low Zone 4b
nodding fescue Festuca subverticillata Grass or grass-like 3 ft Sun–part shade Medium Zone 3a
northern maidenhair Adiantum pedatum Fern 1.3 ft Shade-tolerant Medium Zone 3b
northern red oak Quercus rubra Tree 81 ft Sun–part shade Medium Zone 3b
northern spicebush Lindera benzoin Tree 12 ft Sun–part shade Medium Zone 5a
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
pin oak Quercus palustris Tree 100 ft Sun High Zone 4a
possumhaw Ilex decidua Tree 33 ft Shade-tolerant Medium Zone 5b
post oak Quercus stellata Tree 60 ft Sun Medium Zone 4a
poverty rush Juncus tenuis Grass or grass-like 1.5 ft Sun–part shade Medium Zone 3b
prairie cordgrass Spartina pectinata Grass or grass-like 8 ft Sun High Zone 3b
prairie crab apple Malus ioensis Tree 25 ft Sun Medium Zone 4b
prairie wedgescale Sphenopholis obtusata Grass or grass-like 3.2 ft Sun–part shade Medium Zone 3a
prairie willow Salix humilis Shrub 10 ft Sun–part shade High Zone 3a
purple lovegrass Eragrostis spectabilis Grass or grass-like 11 in Sun Low Zone 3a
purplehead sneezeweed Helenium flexuosum Wildflower (forb) 3.2 ft Sun Low Zone 4b
purplestem beggarticks Bidens connata Wildflower (forb) 3.2 ft Sun–part shade High Zone 12a
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 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
riverbank grape Vitis riparia Vine 45 ft Sun–part shade Medium Zone 4a
roughfruit amaranth Amaranthus tuberculatus Wildflower (forb) 6.6 ft Sun High Zone 4a
rufous bulrush Scirpus pendulus Grass or grass-like 4 ft Sun Medium Zone 3b
sassafras Sassafras albidum Tree 75 ft Sun Low Zone 4b
sawtooth sunflower Helianthus grosseserratus Wildflower (forb) 5 ft Sun Medium Zone 3a
shagbark hickory Carya ovata Tree 75 ft Sun–part shade Medium Zone 3a
sharpwing monkeyflower Mimulus alatus Wildflower (forb) 2.3 ft Shade-tolerant High Zone 5a
shellbark hickory Carya laciniosa Tree 100 ft Shade-tolerant High Zone 5a
shingle oak Quercus imbricaria Tree 45 ft Sun Medium Zone 5b
Short's sedge Carex shortiana Grass or grass-like 3 ft Sun–part shade High Zone 5b
silky dogwood Cornus amomum Shrub 10 ft Sun–part shade High Zone 3b
silver maple Acer saccharinum Tree 90 ft Sun–part shade Medium Zone 2b
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 hedgenettle Stachys tenuifolia Wildflower (forb) 25 ft Shade-tolerant High Zone 4a
smooth phlox Phlox glaberrima Wildflower (forb) 3 ft Sun–part shade High Zone 4b
smooth sumac Rhus glabra Tree 12 ft Sun Low Zone 4a
spotted St. Johnswort Hypericum punctatum Wildflower (forb) 3 ft Shade-tolerant Medium Zone 4a
squarrose sedge Carex squarrosa Grass or grass-like 3 ft Shade-tolerant Medium Zone 4b
stalkless yellowcress Rorippa sessiliflora Wildflower (forb) 1.5 ft Sun–part shade High Zone 12b
stiff goldenrod Oligoneuron rigidum Wildflower (forb) 3.6 ft Sun–part shade Medium Zone 3a
strawcolored flatsedge Cyperus strigosus Grass or grass-like 3.2 ft Sun Medium Zone 4a
sugar maple Acer saccharum Tree 100 ft Shade-tolerant Medium Zone 2b
summer grape Vitis aestivalis Vine 30 ft Shade-tolerant Medium Zone 5a
swamp chestnut oak Quercus michauxii Tree 80 ft Sun Medium Zone 5a
swamp milkweed Asclepias incarnata Wildflower (forb) 4.9 ft Sun High Zone 3b
swamp smartweed Polygonum hydropiperoides Wildflower (forb) — Sun Medium Zone 10b
swamp white oak Quercus bicolor Tree 100 ft Sun–part shade High Zone 4b
sweet woodreed Cinna arundinacea Grass or grass-like 4.9 ft Shade-tolerant Low Zone 4a
switchgrass Panicum virgatum Grass or grass-like 5 ft Sun Medium Zone 3a
tall hairy agrimony Agrimonia gryposepala Wildflower (forb) 5.9 ft Sun–part shade Medium Zone 3a
tapertip flatsedge Cyperus acuminatus Grass or grass-like 1.3 ft Sun–part shade High Zone 3b
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
threelobe beggarticks Bidens tripartita Wildflower (forb) 3.5 ft Sun–part shade High Zone 12a
tiny mousetail Myosurus minimus Wildflower (forb) 5 in Sun–part shade Medium Zone 12b
trumpet creeper Campsis radicans Vine 2 ft Sun Low Zone 6a
upland bentgrass Agrostis perennans Grass or grass-like 3.5 ft Sun–part shade High Zone 4a
valley redstem Ammannia coccinea Wildflower (forb) 1.6 ft Sun Medium Zone 3b
Virginia creeper Parthenocissus quinquefolia Vine 1 ft Sun–part shade Low Zone 4b
Virginia spiderwort Tradescantia virginiana Wildflower (forb) 1.1 ft Sun–part shade Medium Zone 3b
Virginia threeseed mercury Acalypha virginica Wildflower (forb) 3 ft Sun–part shade Medium Zone 10b
Virginia wildrye Elymus virginicus Grass or grass-like 2.5 ft Shade-tolerant Medium Zone 4b
white ash Fraxinus americana Tree 90 ft Sun High Zone 4a
white avens Geum canadense Wildflower (forb) 3.9 ft Shade-tolerant Medium Zone 4a
white doll's daisy Boltonia asteroides Wildflower (forb) 8 ft Sun–part shade Medium Zone 3b
white oak Quercus alba Tree 100 ft Sun–part shade Medium Zone 3a
white panicle aster Symphyotrichum lanceolatum Wildflower (forb) 6 ft Sun–part shade High Zone 3b
white prairie clover Dalea candida Wildflower (forb) 2 ft Sun–part shade Medium Zone 3b
whiteroot rush Juncus brachycarpus Grass or grass-like 3 ft Sun–part shade Medium Zone 5a
wild bergamot Monarda fistulosa Wildflower (forb) 4.9 ft Sun–part shade High Zone 4a
wild blue phlox Phlox divaricata Wildflower (forb) 3 ft Sun–part shade Medium Zone 4a
yellow passionflower Passiflora lutea Vine 16 ft Shade-tolerant Low Zone 5a

Other native species recorded here 184

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.

  • American bladdernut Staphylea trifolia
  • American burnweed Erechtites hieraciifolius
  • American false pennyroyal Hedeoma pulegioides
  • American ipecac Gillenia stipulata
  • annual marsh elder Iva annua
  • ashy sunflower Helianthus mollis
  • beaked cornsalad Valerianella radiata
  • bearded flatsedge Cyperus squarrosus
  • biennial beeblossom Oenothera gaura
  • blackseed plantain Plantago rugelii
  • bloody butcher Trillium recurvatum
  • blue skullcap Scutellaria lateriflora
  • blue waxweed Cuphea viscosissima
  • bluejacket Tradescantia ohiensis
  • bluntlobe cliff fern Woodsia obtusa
  • Bosc's panicgrass Dichanthelium boscii
  • bottomland aster Symphyotrichum ontarionis
  • bristly greenbrier Smilax tamnoides
  • button eryngo Eryngium yuccifolium
  • Canada lettuce Lactuca canadensis
  • Canadian blacksnakeroot Sanicula canadensis
  • Canadian clearweed Pilea pumila
  • Canadian honewort Cryptotaenia canadensis
  • Carolina draba Draba reptans
  • Carolina geranium Geranium carolinianum
  • Carolina horsenettle Solanum carolinense
  • Carolina leaf-flower Phyllanthus caroliniensis
  • Carolina sedge Carex caroliniana
  • Chapman's bluegrass Poa chapmaniana
  • Christmas fern Polystichum acrostichoides
  • clammy hedgehyssop Gratiola neglecta
  • clasping Venus' looking-glass Triodanis perfoliata
  • clustered blacksnakeroot Sanicula odorata
  • common cinquefoil Potentilla simplex
  • common milkweed Asclepias syriaca
  • common moonseed Menispermum canadense
  • common threeseed mercury Acalypha rhomboidea
  • common yellow oxalis Oxalis stricta
  • compassplant Silphium laciniatum
  • Cuman ragweed Ambrosia psilostachya
  • curlytop knotweed Polygonum lapathifolium
  • cusp dodder Cuscuta cuspidata
  • cutleaf toothwort Cardamine concatenata
  • Davis' sedge Carex davisii
  • Dillenius' ticktrefoil Desmodium glabellum
  • dwarf horseweed Conyza ramosissima
  • dwarf larkspur Delphinium tricorne
  • dwarf plantain Plantago pusilla
  • early goldenrod Solidago juncea
  • eastern bottlebrush grass Elymus hystrix
  • eastern poison ivy Toxicodendron radicans
  • elmleaf goldenrod Solidago ulmifolia
  • Engelmann's spikerush Eleocharis engelmannii
  • feathery false lily of the valley Maianthemum racemosum
  • feverwort Triosteum perfoliatum
  • field thistle Cirsium discolor
  • floating marshpennywort Hydrocotyle ranunculoides
  • floating primrose-willow Ludwigia peploides
  • flowering spurge Euphorbia corollata
  • foxtail barley Hordeum jubatum
  • fringed loosestrife Lysimachia ciliata
  • fuzzy wuzzy sedge Carex hirsutella
  • globe flatsedge Cyperus echinatus
  • golden zizia Zizia aurea
  • gravelweed Verbesina helianthoides
  • great ragweed Ambrosia trifida
  • green antelopehorn Asclepias viridis
  • green comet milkweed Asclepias viridiflora
  • green dragon Arisaema dracontium
  • green milkweed Asclepias hirtella
  • hairy pagoda-plant Blephilia hirsuta
  • hairy wildrye Elymus villosus
  • hairy woodland brome Bromus pubescens
  • hairyfruit chervil Chaerophyllum tainturieri
  • heartleaf skullcap Scutellaria ovata
  • hoary skullcap Scutellaria incana
  • hoary verbena Verbena stricta
  • hogwort Croton capitatus
  • honeyvine Cynanchum laeve
  • hyssopleaf hedgenettle Stachys aspera
  • hyssopleaf hedgenettle Stachys hyssopifolia
  • Indian-tobacco Lobelia inflata
  • inflated narrow-leaf sedge Carex grisea
  • lanceleaf fogfruit Phyla lanceolata
  • lanceleaf ragweed Ambrosia bidentata
  • largebract ticktrefoil Desmodium cuspidatum
  • largebracted plantain Plantago aristata
  • largeseed forget-me-not Myosotis macrosperma
  • lateflowering thoroughwort Eupatorium serotinum
  • licorice bedstraw Galium circaezans
  • lizard's tail Saururus cernuus
  • longleaf groundcherry Physalis longifolia
  • lowland bladderfern Cystopteris protrusa
  • manyfruit primrose-willow Ludwigia polycarpa
  • mat sandbur Cenchrus longispinus
  • mayapple Podophyllum peltatum
  • meadow garlic Allium canadense
  • Mexican plum Prunus mexicana
  • Michigan lily Lilium michiganense
  • Missouri violet Viola missouriensis
  • Muhlenberg's sedge Carex muehlenbergii
  • narrowleaf mountainmint Pycnanthemum tenuifolium
  • narrowleaf paleseed Leucospora multifida
  • narrowleaf pinweed Lechea tenuifolia
  • narrowleaf vervain Verbena simplex
  • neckweed Veronica peregrina
  • New England aster Symphyotrichum novae-angliae
  • nits and lice Hypericum drummondii
  • nodding chickweed Cerastium nutans
  • northern dewberry Rubus flagellaris
  • oneseed bur cucumber Sicyos angulatus
  • pale dock Rumex altissimus
  • paleleaf woodland sunflower Helianthus strumosus
  • Pennsylvania pellitory Parietaria pensylvanica
  • poorjoe Diodia teres
  • poverty dropseed Sporobolus vaginiflorus
  • poverty oatgrass Danthonia spicata
  • prairie rosinweed Silphium terebinthinaceum
  • prairie threeawn Aristida oligantha
  • purple false foxglove Agalinis purpurea
  • purple milkweed Asclepias purpurascens
  • purple milkwort Polygala sanguinea
  • purplerocket Iodanthus pinnatifidus
  • rabbit-tobacco Pseudognaphalium obtusifolium
  • redwhisker clammyweed Polanisia dodecandra
  • rock buttercup Ranunculus micranthus
  • rock muhly Muhlenbergia sobolifera
  • rosepink Sabatia angularis
  • rough barnyardgrass Echinochloa muricata
  • roundseed St. Johnswort Hypericum sphaerocarpum
  • rusty blackhaw Viburnum rufidulum
  • s-curve threeawn Aristida ramosissima
  • sand bittercress Cardamine parviflora
  • sand violet Viola affinis
  • seedbox Ludwigia alternifolia
  • sensitive fern Onoclea sensibilis
  • shortbeak arrowhead Sagittaria brevirostra
  • showy ticktrefoil Desmodium canadense
  • silky dogwood Cornus obliqua
  • sixweeks fescue Vulpia octoflora
  • slender lespedeza Lespedeza virginica
  • slender looseflower sedge Carex gracilescens
  • slender yellow woodsorrel Oxalis dillenii
  • slickseed fuzzybean Strophostyles leiosperma
  • slimleaf panicgrass Dichanthelium linearifolium
  • small pondweed Potamogeton pusillus
  • smooth false buttonweed Spermacoce glabra
  • smooth Solomon's seal Polygonatum biflorum
  • soft fox sedge Carex conjuncta
  • spotted geranium Geranium maculatum
  • spotted sandmat Chamaesyce maculata
  • spotted water hemlock Cicuta maculata
  • spreading chervil Chaerophyllum procumbens
  • spreading sandmat Chamaesyce humistrata
  • spring forget-me-not Myosotis verna
  • stiff sunflower Helianthus pauciflorus
  • swamp dock Rumex verticillatus
  • swamp verbena Verbena hastata
  • sweetscented joe pye weed Eutrochium purpureum
  • terrestrial water-starwort Callitriche terrestris
  • thin paspalum Paspalum setaceum
  • tufted lovegrass Eragrostis pectinacea
  • veiny skullcap Scutellaria nervosa
  • Venus' pride Houstonia purpurea
  • violet woodsorrel Oxalis violacea
  • Virginia pepperweed Lepidium virginicum
  • Virginia plantain Plantago virginica
  • Virginia snakeroot Aristolochia serpentaria
  • Virginia springbeauty Claytonia virginica
  • Virginia winged rockcress Sibara virginica
  • western tansymustard Descurainia pinnata
  • white fawnlily Erythronium albidum
  • white heath aster Symphyotrichum ericoides
  • white snakeroot Ageratina altissima
  • white vervain Verbena urticifolia
  • whitestar Ipomoea lacunosa
  • whorled milkwort Polygala verticillata
  • wild quinine Parthenium integrifolium
  • wild yam Dioscorea villosa
  • winged lythrum Lythrum alatum
  • witchgrass Panicum capillare
  • woodland sunflower Helianthus divaricatus
  • yellowfruit sedge Carex annectens
  • yellowseed false pimpernel Lindernia dubia
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.

  • annual ragweedAmbrosia artemisiifolia
  • climbing false buckwheatPolygonum scandens
  • Kentucky bluegrassPoa pratensis

Compared with Illinois

The typical county is the median of the 102 Illinois 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, Clinton County and Illinois
MeasureClinton CountyTypical countyStatewide
Native species 372 641 1,909
Garden-ready natives 188 272 652
Tree 53 — 187
Shrub 7 — 96
Wildflower (forb) 209 — 1,015
Grass or grass-like 79 — 444
Vine 17 — 79
Fern 7 — 88

Neighboring counties

Counties that share a ZIP code with Clinton County.

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
Clinton County (county FIPS 17027), Illinois. 372 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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