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common milkweed
Asclepias syriaca
11,178 observations
prairie trillium
Trillium recurvatum
9,777 observations
mayapple
Podophyllum peltatum
8,532 observations
Virginia Springbeauty
Claytonia virginica
7,999 observations
Virginia bluebells
Mertensia virginica
7,671 observations
wild bergamot
Monarda fistulosa
6,771 observations
American pokeweed
Phytolacca americana
6,539 observations
bloodroot
Sanguinaria canadensis
6,059 observations
ground-ivy
Glechoma hederacea
5,823 observations
wild geranium
Geranium maculatum
5,707 observations
garlic mustard
Alliaria petiolata
5,691 observations
blue phlox
Phlox divaricata
5,633 observations
wild carrot
Daucus carota
5,111 observations
tall bellflower
Campanulastrum americanum
5,038 observations
Amur honeysuckle
Lonicera maackii
4,934 observations
cut-leaved toothwort
Cardamine concatenata
4,905 observations
chicory
Cichorium intybus
4,661 observations
compass plant
Silphium laciniatum
4,549 observations
grey-headed coneflower
Ratibida pinnata
4,516 observations
butterfly milkweed
Asclepias tuberosa
4,514 observations
white fawnlily
Erythronium albidum
4,315 observations
rattlesnake master
Eryngium yuccifolium
4,305 observations
Jack-in-the-Pulpit
Arisaema triphyllum
4,178 observations
Red Clover
Trifolium pratense
4,132 observations
Dutchman's breeches
Dicentra cucullaria
4,129 observations
cup plant
Silphium perfoliatum
4,034 observations
white snakeroot
Ageratina altissima
3,994 observations
eastern shooting star
Primula meadia
3,888 observations
American black elderberry
Sambucus canadensis
3,800 observations
bittersweet nightshade
Solanum dulcamara
3,739 observations
box elder
Acer negundo
3,608 observations
great blue lobelia
Lobelia siphilitica
3,574 observations
common jewelweed
Impatiens capensis
3,549 observations
dame's rocket
Hesperis matronalis
3,481 observations
eastern poison ivy
Toxicodendron radicans
3,467 observations
Virginia waterleaf
Hydrophyllum virginianum
3,453 observations
swamp milkweed
Asclepias incarnata
3,439 observations
Butterweed
Packera glabella
3,436 observations
prairie dock
Silphium terebinthinaceum
3,350 observations
great mullein
Verbascum thapsus
3,309 observations
American jumpseed
Persicaria virginiana
3,217 observations
white clover
Trifolium repens
3,210 observations
purple crownvetch
Securigera varia
3,192 observations
black-eyed Susan
Rudbeckia hirta
3,137 observations
common ragweed
Ambrosia artemisiifolia
3,093 observations
cutleaf teasel
Dipsacus laciniatus
3,092 observations
Ohio spiderwort
Tradescantia ohiensis
3,039 observations
Carolina horsenettle
Solanum carolinense
2,986 observations
multiflora rose
Rosa multiflora
2,978 observations
red columbine
Aquilegia canadensis
2,953 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)
- wild geranium (Geranium maculatum)
- The most observed plant in Illinois is common milkweed (Asclepias syriaca), with 11,178 recorded observations.