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common milkweed
Asclepias syriaca
9,424 observations
prairie trillium
Trillium recurvatum
9,086 observations
mayapple
Podophyllum peltatum
7,880 observations
Virginia Springbeauty
Claytonia virginica
7,694 observations
Virginia bluebells
Mertensia virginica
7,366 observations
wild bergamot
Monarda fistulosa
5,897 observations
American pokeweed
Phytolacca americana
5,847 observations
bloodroot
Sanguinaria canadensis
5,828 observations
ground-ivy
Glechoma hederacea
5,345 observations
garlic mustard
Alliaria petiolata
5,327 observations
wild geranium
Geranium maculatum
5,116 observations
blue phlox
Phlox divaricata
5,009 observations
cut-leaved toothwort
Cardamine concatenata
4,663 observations
wild carrot
Daucus carota
4,515 observations
Amur honeysuckle
Lonicera maackii
4,515 observations
tall bellflower
Campanulastrum americanum
4,257 observations
white fawnlily
Erythronium albidum
4,239 observations
Dutchman's breeches
Dicentra cucullaria
4,056 observations
chicory
Cichorium intybus
4,019 observations
butterfly milkweed
Asclepias tuberosa
3,816 observations
Jack-in-the-Pulpit
Arisaema triphyllum
3,814 observations
grey-headed coneflower
Ratibida pinnata
3,763 observations
compass plant
Silphium laciniatum
3,754 observations
rattlesnake master
Eryngium yuccifolium
3,722 observations
white snakeroot
Ageratina altissima
3,542 observations
Red Clover
Trifolium pratense
3,469 observations
eastern shooting star
Primula meadia
3,443 observations
cup plant
Silphium perfoliatum
3,376 observations
box elder
Acer negundo
3,337 observations
great blue lobelia
Lobelia siphilitica
3,206 observations
bittersweet nightshade
Solanum dulcamara
3,199 observations
Virginia waterleaf
Hydrophyllum virginianum
3,152 observations
American black elderberry
Sambucus canadensis
3,147 observations
Butterweed
Packera glabella
3,142 observations
common jewelweed
Impatiens capensis
3,099 observations
dame's rocket
Hesperis matronalis
3,085 observations
great mullein
Verbascum thapsus
3,039 observations
eastern poison ivy
Toxicodendron radicans
3,023 observations
swamp milkweed
Asclepias incarnata
2,969 observations
common blue violet
Viola sororia
2,899 observations
prairie dock
Silphium terebinthinaceum
2,822 observations
American jumpseed
Persicaria virginiana
2,803 observations
multiflora rose
Rosa multiflora
2,776 observations
New England aster
Symphyotrichum novae-angliae
2,775 observations
white clover
Trifolium repens
2,727 observations
Ohio spiderwort
Tradescantia ohiensis
2,716 observations
Siberian squill
Scilla siberica
2,699 observations
cutleaf teasel
Dipsacus laciniatus
2,692 observations
purple crownvetch
Securigera varia
2,681 observations
sharp-lobed hepatica
Hepatica acutiloba
2,668 observations
Frequently Asked Questions
- The 10 most common plants in Illinois are:
- common milkweed (Asclepias syriaca)
- prairie trillium (Trillium recurvatum)
- mayapple (Podophyllum peltatum)
- Virginia Springbeauty (Claytonia virginica)
- Virginia bluebells (Mertensia virginica)
- wild bergamot (Monarda fistulosa)
- American pokeweed (Phytolacca americana)
- bloodroot (Sanguinaria canadensis)
- ground-ivy (Glechoma hederacea)
- garlic mustard (Alliaria petiolata)
- The most observed plant in Illinois is common milkweed (Asclepias syriaca), with 9,424 recorded observations.