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prairie trillium
Trillium recurvatum
9,610 observations
common milkweed
Asclepias syriaca
9,567 observations
mayapple
Podophyllum peltatum
8,386 observations
Virginia Springbeauty
Claytonia virginica
7,842 observations
Virginia bluebells
Mertensia virginica
7,645 observations
wild bergamot
Monarda fistulosa
6,011 observations
bloodroot
Sanguinaria canadensis
6,005 observations
American pokeweed
Phytolacca americana
5,996 observations
wild geranium
Geranium maculatum
5,641 observations
garlic mustard
Alliaria petiolata
5,630 observations
ground-ivy
Glechoma hederacea
5,572 observations
blue phlox
Phlox divaricata
5,323 observations
cut-leaved toothwort
Cardamine concatenata
4,784 observations
Amur honeysuckle
Lonicera maackii
4,734 observations
wild carrot
Daucus carota
4,552 observations
white fawnlily
Erythronium albidum
4,299 observations
tall bellflower
Campanulastrum americanum
4,267 observations
Dutchman's breeches
Dicentra cucullaria
4,103 observations
Jack-in-the-Pulpit
Arisaema triphyllum
4,094 observations
chicory
Cichorium intybus
4,045 observations
compass plant
Silphium laciniatum
3,974 observations
butterfly milkweed
Asclepias tuberosa
3,896 observations
eastern shooting star
Primula meadia
3,835 observations
rattlesnake master
Eryngium yuccifolium
3,827 observations
grey-headed coneflower
Ratibida pinnata
3,786 observations
Red Clover
Trifolium pratense
3,677 observations
white snakeroot
Ageratina altissima
3,560 observations
cup plant
Silphium perfoliatum
3,504 observations
box elder
Acer negundo
3,463 observations
dame's rocket
Hesperis matronalis
3,350 observations
Virginia waterleaf
Hydrophyllum virginianum
3,348 observations
bittersweet nightshade
Solanum dulcamara
3,311 observations
Butterweed
Packera glabella
3,310 observations
eastern poison ivy
Toxicodendron radicans
3,218 observations
great blue lobelia
Lobelia siphilitica
3,210 observations
American black elderberry
Sambucus canadensis
3,205 observations
common jewelweed
Impatiens capensis
3,130 observations
great mullein
Verbascum thapsus
3,114 observations
prairie dock
Silphium terebinthinaceum
3,003 observations
swamp milkweed
Asclepias incarnata
2,980 observations
American jumpseed
Persicaria virginiana
2,959 observations
white clover
Trifolium repens
2,879 observations
red columbine
Aquilegia canadensis
2,878 observations
Ohio spiderwort
Tradescantia ohiensis
2,878 observations
multiflora rose
Rosa multiflora
2,862 observations
purple crownvetch
Securigera varia
2,802 observations
New England aster
Symphyotrichum novae-angliae
2,793 observations
Siberian squill
Scilla siberica
2,746 observations
Eastern Skunk Cabbage
Symplocarpus foetidus
2,718 observations
sharp-lobed hepatica
Hepatica acutiloba
2,718 observations
Frequently Asked Questions
- The 10 most common plants in Illinois are:
- prairie trillium (Trillium recurvatum)
- common milkweed (Asclepias syriaca)
- mayapple (Podophyllum peltatum)
- Virginia Springbeauty (Claytonia virginica)
- Virginia bluebells (Mertensia virginica)
- wild bergamot (Monarda fistulosa)
- bloodroot (Sanguinaria canadensis)
- American pokeweed (Phytolacca americana)
- wild geranium (Geranium maculatum)
- garlic mustard (Alliaria petiolata)
- The most observed plant in Illinois is prairie trillium (Trillium recurvatum), with 9,610 recorded observations.