Native plants · Missouri

Native plants of Knox County

405 plant species are recorded as native to Missouri in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in Knox County by USDA PLANTS. 174 of them have growing records you can filter by light, moisture, height and estimated cold hardiness. 4 more species are listed as both native and introduced and kept in a separate section.

County summary · USDA PLANTS and Kew WCVP

Knox County, Missouri

Native species: 405 Typical Missouri county: 557 (median of 114 counties)
Garden-ready natives: 174 Typical Missouri county: 219
Share by type (all 405 native species): Percent of the 405 native species in each growth type

Tree 14% (58)
Shrub 4% (15)
Wildflower (forb) 65% (263)
Grass or grass-like 9% (37)
Vine 5% (21)
Fern 3% (11)

Wildflowers make up the largest share of the native list (65%), followed by trees (14%).

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 6a (2023 map).

The native plant list

Garden-ready natives 174

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

Garden-ready native plants of Knox County, Missouri
Plant	Type	Height	Light	Water use	Hardy to
alternateleaf dogwood Cornus alternifolia	Tree	25 ft	Shade-tolerant	Medium	Zone 2b
American basswood Tilia americana	Tree	100 ft	Shade-tolerant	Medium	Zone 2b
American bellflower Campanulastrum americanum	Wildflower (forb)	6 ft	Shade-tolerant	Medium	Zone 12b
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 hornbeam Carpinus caroliniana	Tree	30 ft	Shade-tolerant	Medium	Zone 4a
American plum Prunus americana	Tree	24 ft	Sun	Medium	Zone 3b
American pokeweed Phytolacca americana	Wildflower (forb)	7.3 ft	Shade-tolerant	Medium	Zone 4a
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
arrowleaf tearthumb Polygonum sagittatum	Vine	1 ft	Sun	Medium	Zone 6a
awlfruit sedge Carex stipata	Grass or grass-like	3.5 ft	Shade-tolerant	Medium	Zone 3b
beaked agrimony Agrimonia rostellata	Wildflower (forb)	2.3 ft	Sun–part shade	Medium	Zone 4a
bearded beggarticks Bidens aristosa	Wildflower (forb)	3.5 ft	Sun–part shade	High	Zone 12b
bitternut hickory Carya cordiformis	Tree	75 ft	Sun	Medium	Zone 2b
black cherry Prunus serotina	Tree	80 ft	Sun	Medium	Zone 4a
black maple Acer nigrum	Tree	100 ft	Shade-tolerant	Medium	Zone 2b
black oak Quercus velutina	Tree	80 ft	Sun–part shade	Medium	Zone 4a
black raspberry Rubus occidentalis	Shrub	6 ft	Sun–part shade	Medium	Zone 4b
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
blackhaw Viburnum prunifolium	Tree	16 ft	Shade-tolerant	Medium	Zone 4a
blackjack oak Quercus marilandica	Tree	25 ft	Sun	Low	Zone 6a
blue cohosh Caulophyllum thalictroides	Wildflower (forb)	2.5 ft	Shade-tolerant	Medium	Zone 4a
blunt broom sedge Carex tribuloides	Grass or grass-like	3 ft	Shade-tolerant	Medium	Zone 4b
bluntleaf bedstraw Galium obtusum	Wildflower (forb)	1.5 ft	Shade-tolerant	High	Zone 4a
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
bur oak Quercus macrocarpa	Tree	100 ft	Sun–part shade	Medium	Zone 3b
bur-reed sedge Carex sparganioides	Grass or grass-like	3 ft	Shade-tolerant	High	Zone 4a
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 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
Canadian lousewort Pedicularis canadensis	Wildflower (forb)	1.3 ft	Shade-tolerant	Medium	Zone 3a
Canadian milkvetch Astragalus canadensis	Wildflower (forb)	6 in	Sun	Medium	Zone 3b
Canadian waterweed Elodea canadensis	Wildflower (forb)	—	Sun	High	Zone 4a
Carolina foxtail Alopecurus carolinianus	Grass or grass-like	1.7 ft	Sun	Low	Zone 3a
Carolina rose Rosa carolina	Shrub	5 ft	Sun–part shade	Low	Zone 3a
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
chokecherry Prunus virginiana	Tree	25 ft	Sun	Medium	Zone 3a
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 cowparsnip Heracleum maximum	Wildflower (forb)	8 ft	Sun	High	Zone 3b
common hackberry Celtis occidentalis	Tree	60 ft	Shade-tolerant	Low	Zone 2b
common hoptree Ptelea trifoliata	Tree	25 ft	Sun–part shade	High	Zone 4a
common selfheal Prunella vulgaris	Wildflower (forb)	1.5 ft	Sun–part shade	Medium	Zone 3b
common serviceberry Amelanchier arborea	Tree	36 ft	Shade-tolerant	Medium	Zone 2b
common sneezeweed Helenium autumnale	Wildflower (forb)	4.9 ft	Sun	Medium	Zone 3a
common spikerush Eleocharis palustris	Grass or grass-like	1.3 ft	Sun	High	Zone 3b
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
cup plant Silphium perfoliatum	Wildflower (forb)	6 ft	Sun–part shade	—	Zone 2b
cutleaf coneflower Rudbeckia laciniata	Wildflower (forb)	8.2 ft	Shade-tolerant	Low	Zone 3b
devil's beggartick Bidens frondosa	Wildflower (forb)	4 ft	Sun–part shade	Medium	Zone 12a
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
downy arrowwood Viburnum rafinesqueanum	Shrub	6 ft	Shade-tolerant	Low	Zone 3a
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 purple coneflower Echinacea purpurea	Wildflower (forb)	1.2 ft	Sun	Medium	Zone 4a
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 woodland sedge Carex blanda	Grass or grass-like	2 ft	Shade-tolerant	High	Zone 4b
false daisy Eclipta prostrata	Wildflower (forb)	3.2 ft	Sun–part shade	Medium	Zone 10b
field horsetail Equisetum arvense	Fern	11 in	Sun–part shade	High	Zone 3a
field pussytoes Antennaria neglecta	Wildflower (forb)	1 ft	Sun	Low	Zone 3b
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
frost grape Vitis vulpina	Vine	83 ft	Sun–part shade	Medium	Zone 5a
Georgia bulrush Scirpus georgianus	Grass or grass-like	4.5 ft	Sun–part shade	Medium	Zone 3b
giant goldenrod Solidago gigantea	Wildflower (forb)	8.2 ft	Sun–part shade	Medium	Zone 4a
gray dogwood Cornus racemosa	Shrub	10 ft	Shade-tolerant	Medium	Zone 2b
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
groundnut Apios americana	Vine	1 ft	Shade-tolerant	Medium	Zone 5a
harvestlice Agrimonia parviflora	Wildflower (forb)	6 ft	Sun–part shade	High	Zone 4a
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
Indianhemp Apocynum cannabinum	Wildflower (forb)	3.3 ft	Sun–part shade	High	Zone 3a
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
lanceleaf loosestrife Lysimachia lanceolata	Wildflower (forb)	2.5 ft	Shade-tolerant	Medium	Zone 5a
leadplant Amorpha canescens	Shrub	4 ft	Shade-tolerant	Low	Zone 3b
limestone bittercress Cardamine douglassii	Wildflower (forb)	1 ft	Shade-tolerant	High	Zone 4a
limestone wild petunia Ruellia strepens	Wildflower (forb)	3.6 ft	Shade-tolerant	Low	Zone 6a
littleleaf buttercup Ranunculus abortivus	Wildflower (forb)	2.8 ft	Shade-tolerant	Medium	Zone 3a
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
Missouri River willow Salix eriocephala	Tree	52 ft	Shade-tolerant	High	Zone 3b
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 beggartick Bidens cernua	Wildflower (forb)	3.2 ft	Sun–part shade	High	Zone 12a
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
Ohio buckeye Aesculus glabra	Tree	68 ft	Shade-tolerant	Medium	Zone 4a
pale touch-me-not Impatiens pallida	Wildflower (forb)	8.2 ft	Shade-tolerant	Medium	Zone 10b
partridge pea Chamaecrista fasciculata	Wildflower (forb)	2.4 ft	Shade-tolerant	Medium	Zone 7a
peachleaf willow Salix amygdaloides	Tree	60 ft	Sun	High	Zone 4a
Pennsylvania smartweed Polygonum pensylvanicum	Wildflower (forb)	3.9 ft	Sun	Medium	Zone 10b
perplexed ticktrefoil Desmodium perplexum	Wildflower (forb)	4 ft	Sun–part shade	Medium	Zone 4a
pin oak Quercus palustris	Tree	100 ft	Sun	High	Zone 4a
post oak Quercus stellata	Tree	60 ft	Sun	Medium	Zone 4a
prairie blazing star Liatris pycnostachya	Wildflower (forb)	3.5 ft	Sun	Medium	Zone 4a
prairie crab apple Malus ioensis	Tree	25 ft	Sun	Medium	Zone 4b
prairie fleabane Erigeron strigosus	Wildflower (forb)	3 ft	Sun	Medium	Zone 4b
prairie willow Salix humilis	Shrub	10 ft	Sun–part shade	High	Zone 3a
pride of Ohio Dodecatheon meadia	Wildflower (forb)	2 ft	Shade-tolerant	Medium	Zone 3b
purplestem beggarticks Bidens connata	Wildflower (forb)	3.2 ft	Sun–part shade	High	Zone 12a
rattlesnake fern Botrychium virginianum	Fern	1.4 ft	Shade-tolerant	Medium	Zone 3b
red mulberry Morus rubra	Tree	70 ft	Shade-tolerant	Medium	Zone 4a
reed canarygrass Phalaris arundinacea	Grass or grass-like	5 ft	Sun	High	Zone 3b
river birch Betula nigra	Tree	70 ft	Sun	High	Zone 4a
riverbank grape Vitis riparia	Vine	45 ft	Sun–part shade	Medium	Zone 4a
rough avens Geum laciniatum	Wildflower (forb)	3.1 ft	Sun–part shade	Medium	Zone 5a
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
sandbar willow Salix interior	Tree	30 ft	Sun	—	Zone 1a
sawtooth sunflower Helianthus grosseserratus	Wildflower (forb)	5 ft	Sun	Medium	Zone 3a
scarlet Indian paintbrush Castilleja coccinea	Wildflower (forb)	1.6 ft	Shade-tolerant	Medium	Zone 4b
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
shrubby St. Johnswort Hypericum prolificum	Shrub	3.2 ft	Sun–part shade	High	Zone 4b
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 sumac Rhus glabra	Tree	12 ft	Sun	Low	Zone 4a
spotted St. Johnswort Hypericum punctatum	Wildflower (forb)	3 ft	Shade-tolerant	Medium	Zone 4a
spring avens Geum vernum	Wildflower (forb)	1.6 ft	Shade-tolerant	Medium	Zone 5b
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
sugar maple Acer saccharum	Tree	100 ft	Shade-tolerant	Medium	Zone 2b
swamp milkweed Asclepias incarnata	Wildflower (forb)	4.9 ft	Sun	High	Zone 3b
swamp white oak Quercus bicolor	Tree	100 ft	Sun–part shade	High	Zone 4b
tall cinquefoil Potentilla arguta	Wildflower (forb)	3 ft	Sun–part shade	Medium	Zone 3b
tapertip rush Juncus acuminatus	Grass or grass-like	3 ft	Sun–part shade	High	Zone 4a
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
valley redstem Ammannia coccinea	Wildflower (forb)	1.6 ft	Sun	Medium	Zone 3b
Virginia bluebells Mertensia virginica	Wildflower (forb)	2.3 ft	Shade-tolerant	High	Zone 4b
Virginia creeper Parthenocissus quinquefolia	Vine	1 ft	Sun–part shade	Low	Zone 4b
Virginia iris Iris virginica	Wildflower (forb)	3.3 ft	Shade-tolerant	High	Zone 8b
Virginia threeseed mercury Acalypha virginica	Wildflower (forb)	3 ft	Sun–part shade	Medium	Zone 10b
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
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 prairie clover Dalea candida	Wildflower (forb)	2 ft	Sun–part shade	Medium	Zone 3b
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
woodland bluegrass Poa sylvestris	Grass or grass-like	3 ft	Shade-tolerant	High	Zone 4a
zigzag goldenrod Solidago flexicaulis	Wildflower (forb)	3 ft	Sun–part shade	Medium	Zone 5b

Other native species recorded here 231

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 burnweed Erechtites hieraciifolius
American false pennyroyal Hedeoma pulegioides
American hogpeanut Amphicarpaea bracteata
American lopseed Phryma leptostachya
American spikenard Aralia racemosa
annual marsh elder Iva annua
Apocynum ×floribundum Apocynum ×floribundum
arrowleaf violet Viola sagittata
ashy sunflower Helianthus mollis
balsam groundsel Packera paupercula
bastard toadflax Comandra umbellata
beggarslice Hackelia virginiana
birdfoot violet Viola pedata
blackseed plantain Plantago rugelii
bloodroot Sanguinaria canadensis
blue skullcap Scutellaria lateriflora
bluntlobe cliff fern Woodsia obtusa
bog yellowcress Rorippa palustris
bristly greenbrier Smilax tamnoides
brown widelip orchid Liparis liliifolia
browneyed Susan Rudbeckia triloba
buffalo clover Trifolium reflexum
button eryngo Eryngium yuccifolium
Canadian clearweed Pilea pumila
Canadian honewort Cryptotaenia canadensis
Canadian wildginger Asarum canadense
Canadian woodnettle Laportea canadensis
Carolina desert-chicory Pyrrhopappus carolinianus
Carolina horsenettle Solanum carolinense
Carolina larkspur Delphinium carolinianum
carpenter's square Scrophularia marilandica
Christmas fern Polystichum acrostichoides
churchmouse threeawn Aristida dichotoma
clammy hedgehyssop Gratiola neglecta
Clayton's sweetroot Osmorhiza claytonii
clustered blacksnakeroot Sanicula odorata
common boneset Eupatorium perfoliatum
common cinquefoil Potentilla simplex
common milkweed Asclepias syriaca
common moonseed Menispermum canadense
common pricklyash Zanthoxylum americanum
common threeseed mercury Acalypha rhomboidea
common yellow oxalis Oxalis stricta
compassplant Silphium laciniatum
Culver's root Veronicastrum virginicum
curlytop knotweed Polygonum lapathifolium
Davis' sedge Carex davisii
downy hawthorn Crataegus mollis
downy pagoda-plant Blephilia ciliata
Drummond's aster Symphyotrichum drummondii
dutchman's breeches Dicentra cucullaria
dwarf horseweed Conyza ramosissima
dwarf larkspur Delphinium tricorne
eastern daisy fleabane Erigeron annuus
eastern false rue anemone Enemion biternatum
eastern poison ivy Toxicodendron radicans
eastern prickly gooseberry Ribes cynosbati
eastern waterleaf Hydrophyllum virginianum
elmleaf goldenrod Solidago ulmifolia
eyebane Chamaesyce nutans
feverwort Triosteum perfoliatum
field thistle Cirsium discolor
fiveangled dodder Cuscuta pentagona
flowering spurge Euphorbia corollata
fluxweed Trichostema brachiatum
fourleaf milkweed Asclepias quadrifolia
fragrant bedstraw Galium triflorum
fragrant sumac Rhus aromatica
fringed loosestrife Lysimachia ciliata
golden zizia Zizia aurea
grape honeysuckle Lonicera reticulata
great blue lobelia Lobelia siphilitica
great Indian plantain Arnoglossum reniforme
great ragweed Ambrosia trifida
Greek valerian Polemonium reptans
green carpetweed Mollugo verticillata
green dragon Arisaema dracontium
green milkweed Asclepias hirtella
hairy forked nailwort Paronychia fastigiata
hairy hedgenettle Stachys pilosa
hairy pinweed Lechea mucronata
hairy sunflower Helianthus hirsutus
hairyjoint meadowparsnip Thaspium barbinode
hazel dodder Cuscuta coryli
heavy sedge Carex gravida
hoary puccoon Lithospermum canescens
hogwort Croton capitatus
hortulan plum Prunus hortulana
hybrid oak Quercus ×leana
Indian-tobacco Lobelia inflata
Indianpipe Monotropa uniflora
inflated narrow-leaf sedge Carex grisea
jumpseed Polygonum virginianum
lanceleaf buckthorn Rhamnus lanceolata
lanceleaf ragweed Ambrosia bidentata
largebract ticktrefoil Desmodium cuspidatum
largebracted plantain Plantago aristata
lateflowering thoroughwort Eupatorium serotinum
lesser yellow lady's slipper Cypripedium parviflorum
licorice bedstraw Galium circaezans
limber honeysuckle Lonicera dioica
long-stolon sedge Carex inops
longflower beeblossom Oenothera filiformis
lowland bladderfern Cystopteris protrusa
lowland yellow loosestrife Lysimachia hybrida
lyrate rockcress Arabis lyrata
man of the earth Ipomoea pandurata
manyfruit primrose-willow Ludwigia polycarpa
mayapple Podophyllum peltatum
meadow garlic Allium canadense
Mexican plum Prunus mexicana
Missouri gooseberry Ribes missouriense
Muhlenberg's sedge Carex muehlenbergii
nakedflower ticktrefoil Desmodium nudiflorum
narrowleaf mountainmint Pycnanthemum tenuifolium
narrowleaf pinweed Lechea tenuifolia
neckweed Veronica peregrina
New England aster Symphyotrichum novae-angliae
nits and lice Hypericum drummondii
northern dewberry Rubus flagellaris
northern slender lady's tresses Spiranthes lacera
Norwegian cinquefoil Potentilla norvegica
obedient plant Physostegia virginiana
orangefruit horse-gentian Triosteum aurantiacum
pale beardtongue Penstemon pallidus
pale dock Rumex altissimus
pale Indian plantain Arnoglossum atriplicifolium
palegreen orchid Platanthera flava
palespike lobelia Lobelia spicata
Pennsylvania pellitory Parietaria pensylvanica
pitseed goosefoot Chenopodium berlandieri
plain gentian Gentiana alba
pointedleaf ticktrefoil Desmodium glutinosum
prairie blue-eyed grass Sisyrinchium campestre
prairie ironweed Vernonia fasciculata
prairie rose Rosa arkansana
prairie tea Croton monanthogynus
prairie violet Viola pedatifida
purple cliffbrake Pellaea atropurpurea
purple meadow-rue Thalictrum dasycarpum
purple milkwort Polygala sanguinea
purplerocket Iodanthus pinnatifidus
rabbit-tobacco Pseudognaphalium obtusifolium
red columbine Aquilegia canadensis
Richardson's alumroot Heuchera richardsonii
richwoods sedge Carex oligocarpa
robin's plantain Erigeron pulchellus
rock buttercup Ranunculus micranthus
rosy sedge Carex rosea
rough false pennyroyal Hedeoma hispida
rough hawkweed Hieracium scabrum
roundfruit hedgehyssop Gratiola virginiana
roundleaf ragwort Packera obovata
roundseed St. Johnswort Hypericum sphaerocarpum
roundstem false foxglove Agalinis gattingeri
rue anemone Thalictrum thalictroides
scaly blazing star Liatris squarrosa
seedbox Ludwigia alternifolia
sensitive fern Onoclea sensibilis
sessileleaf bellwort Uvularia sessilifolia
sessileleaf ticktrefoil Desmodium sessilifolium
shining bedstraw Galium concinnum
shortbeak sedge Carex brevior
shrubby lespedeza Lespedeza frutescens
sixweeks fescue Vulpia octoflora
slender lespedeza Lespedeza virginica
slender yellow woodsorrel Oxalis dillenii
slenderleaf false foxglove Agalinis tenuifolia
slickseed fuzzybean Strophostyles leiosperma
slimleaf panicgrass Dichanthelium linearifolium
small skullcap Scutellaria parvula
smooth cliffbrake Pellaea glabella
smooth forked nailwort Paronychia canadensis
smooth rockcress Arabis laevigata
smooth Solomon's seal Polygonatum biflorum
soft agrimony Agrimonia pubescens
soft fox sedge Carex conjuncta
soft-hair marbleseed Onosmodium bejariense
spinulose woodfern Dryopteris carthusiana
spoonleaf purple everlasting Gamochaeta purpurea
spotted geranium Geranium maculatum
spotted water hemlock Cicuta maculata
spreading dogbane Apocynum androsaemifolium
spring forget-me-not Myosotis verna
Standley's goosefoot Chenopodium standleyanum
starry false lily of the valley Maianthemum stellatum
stiff sunflower Helianthus pauciflorus
stiff tickseed Coreopsis palmata
swamp dock Rumex verticillatus
swamp verbena Verbena hastata
sweet coneflower Rudbeckia subtomentosa
sweetscented joe pye weed Eutrochium purpureum
tall blazing star Liatris aspera
tall thimbleweed Anemone virginiana
tall thoroughwort Eupatorium altissimum
tall tickseed Coreopsis tripteris
terrestrial water-starwort Callitriche terrestris
twoflower dwarfdandelion Krigia biflora
twoleaf miterwort Mitella diphylla
upright carrionflower Smilax ecirrhata
violet lespedeza Lespedeza violacea
Virginia bunchflower Veratrum virginicum
Virginia groundcherry Physalis virginiana
Virginia plantain Plantago virginica
Virginia strawberry Fragaria virginiana
walking fern Asplenium rhizophyllum
western tansymustard Descurainia pinnata
white arrowleaf aster Symphyotrichum urophyllum
white baneberry Actaea pachypoda
white fawnlily Erythronium albidum
white heath aster Symphyotrichum ericoides
white snakeroot Ageratina altissima
white vervain Verbena urticifolia
whitetinge sedge Carex albicans
wholeleaf rosinweed Silphium integrifolium
whorled milkweed Asclepias verticillata
whorled milkwort Polygala ambigua
whorled milkwort Polygala verticillata
whorled mountainmint Pycnanthemum verticillatum
widowsfrill Silene stellata
wild quinine Parthenium integrifolium
willowleaf aster Symphyotrichum praealtum
winged lythrum Lythrum alatum
wingstem Verbesina alternifolia
woman's tobacco Antennaria plantaginifolia
Wood's bunchflower Veratrum woodii
woodland lettuce Lactuca floridana
yellow giant hyssop Agastache nepetoides
yellow pimpernel Taenidia integerrima
yellowfruit sedge Carex annectens
yellowseed false pimpernel Lindernia dubia

Also listed as native and introduced here 4

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
common reedPhragmites australis
white sagebrushArtemisia ludoviciana

Compared with Missouri

The typical county is the median of the 114 Missouri 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, Knox County and Missouri
Measure	Knox County	Typical county	Statewide
Native species	405	557	1,678
Garden-ready natives	174	219	558
Tree	58	—	149
Shrub	15	—	59
Wildflower (forb)	263	—	936
Grass or grass-like	37	—	395
Vine	21	—	79
Fern	11	—	60

Neighboring counties

Counties that share a ZIP code with Knox County.

Adair County, MO 253 garden-ready
Lewis County, MO 196 garden-ready
Macon County, MO 196 garden-ready
Scotland County, MO 151 garden-ready
Shelby County, MO 185 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: Knox County (county FIPS 29103), Missouri. 405 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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