Plants of Illinois
The plants most often spotted in Illinois, ranked by recent research-grade observations.
Most-observed plants in Illinois
common milkweed
Asclepias syriaca
11,158 observations
mayapple
Podophyllum peltatum
10,872 observations
prairie trillium
Trillium recurvatum
10,849 observations
Virginia Springbeauty
Claytonia virginica
10,155 observations
Virginia bluebells
Mertensia virginica
9,058 observations
American pokeweed
Phytolacca americana
7,756 observations
bloodroot
Sanguinaria canadensis
7,391 observations
Amur honeysuckle
Lonicera maackii
7,181 observations
blue phlox
Phlox divaricata
7,055 observations
wild bergamot
Monarda fistulosa
6,851 observations
garlic mustard
Alliaria petiolata
6,696 observations
ground-ivy
Glechoma hederacea
6,676 observations · iNaturalist
wild geranium
Geranium maculatum
6,564 observations
cut-leaved toothwort
Cardamine concatenata
5,856 observations
wild carrot
Daucus carota
5,501 observations
tall bellflower
Campanulastrum americanum
5,466 observations · iNaturalist
Dutchman's breeches
Dicentra cucullaria
5,107 observations
chicory
Cichorium intybus
4,988 observations
butterfly milkweed
Asclepias tuberosa
4,863 observations
Jack-in-the-Pulpit
Arisaema triphyllum
4,695 observations
white fawnlily
Erythronium albidum
4,695 observations
box elder
Acer negundo
4,656 observations
white snakeroot
Ageratina altissima
4,619 observations
Butterweed
Packera glabella
4,601 observations · iNaturalist
Red Clover
Trifolium pratense
4,594 observations
grey-headed coneflower
Ratibida pinnata
4,482 observations
rattlesnake master
Eryngium yuccifolium
4,417 observations
compass plant
Silphium laciniatum
4,370 observations
eastern redbud
Cercis canadensis
4,350 observations
white clover
Trifolium repens
4,350 observations
eastern shooting star
Primula meadia
4,255 observations
eastern poison ivy
Toxicodendron radicans
4,213 observations
American black elderberry
Sambucus canadensis
4,143 observations
great mullein
Verbascum thapsus
4,135 observations
cup plant
Silphium perfoliatum
4,071 observations
common jewelweed
Impatiens capensis
4,055 observations
common pawpaw
Asimina triloba
3,968 observations
great blue lobelia
Lobelia siphilitica
3,962 observations
red columbine
Aquilegia canadensis
3,741 observations
multiflora rose
Rosa multiflora
3,653 observations
American jumpseed
Persicaria virginiana
3,595 observations · iNaturalist
Carolina horsenettle
Solanum carolinense
3,575 observations
dame's rocket
Hesperis matronalis
3,555 observations · iNaturalist
mock strawberry
Potentilla indica
3,548 observations · iNaturalist
Virginia waterleaf
Hydrophyllum virginianum
3,546 observations
purple crownvetch
Securigera varia
3,502 observations · iNaturalist
bittersweet nightshade
Solanum dulcamara
3,455 observations
prairie dock
Silphium terebinthinaceum
3,445 observations
eastern redcedar
Juniperus virginiana
3,431 observations
swamp milkweed
Asclepias incarnata
3,379 observations