Plants of Illinois
The plants most often spotted in Illinois, ranked by recent research-grade observations.
275,059
recent observations
50
species listed
50
plants
Naturalists have logged 275,059 research-grade observations across the 50 most-recorded species in Illinois. The most frequently seen is the common milkweed, with 12,231 recorded sightings.
Most-observed plants in Illinois
common milkweed
Asclepias syriaca
12,231 observations
mayapple
Podophyllum peltatum
10,965 observations
prairie trillium
Trillium recurvatum
10,874 observations
Virginia Springbeauty
Claytonia virginica
10,173 observations
Virginia bluebells
Mertensia virginica
9,065 observations
American pokeweed
Phytolacca americana
8,041 observations
wild bergamot
Monarda fistulosa
7,518 observations
bloodroot
Sanguinaria canadensis
7,424 observations
Amur honeysuckle
Lonicera maackii
7,245 observations
blue phlox
Phlox divaricata
7,146 observations
ground-ivy
Glechoma hederacea
6,884 observations · iNaturalist
garlic mustard
Alliaria petiolata
6,722 observations
wild geranium
Geranium maculatum
6,610 observations
tall bellflower
Campanulastrum americanum
6,195 observations · iNaturalist
wild carrot
Daucus carota
5,951 observations
cut-leaved toothwort
Cardamine concatenata
5,864 observations
chicory
Cichorium intybus
5,428 observations
butterfly milkweed
Asclepias tuberosa
5,216 observations
Dutchman's breeches
Dicentra cucullaria
5,114 observations
grey-headed coneflower
Ratibida pinnata
5,089 observations
Red Clover
Trifolium pratense
4,897 observations
box elder
Acer negundo
4,762 observations
white snakeroot
Ageratina altissima
4,751 observations
rattlesnake master
Eryngium yuccifolium
4,750 observations
Jack-in-the-Pulpit
Arisaema triphyllum
4,739 observations
compass plant
Silphium laciniatum
4,725 observations
white fawnlily
Erythronium albidum
4,708 observations
Butterweed
Packera glabella
4,632 observations · iNaturalist
white clover
Trifolium repens
4,550 observations
American black elderberry
Sambucus canadensis
4,494 observations
eastern redbud
Cercis canadensis
4,413 observations
eastern poison ivy
Toxicodendron radicans
4,364 observations
cup plant
Silphium perfoliatum
4,345 observations
eastern shooting star
Primula meadia
4,284 observations
great mullein
Verbascum thapsus
4,256 observations
common jewelweed
Impatiens capensis
4,251 observations
great blue lobelia
Lobelia siphilitica
4,048 observations
common pawpaw
Asimina triloba
4,035 observations
Carolina horsenettle
Solanum carolinense
3,947 observations
red columbine
Aquilegia canadensis
3,799 observations
swamp milkweed
Asclepias incarnata
3,777 observations
American jumpseed
Persicaria virginiana
3,764 observations · iNaturalist
multiflora rose
Rosa multiflora
3,746 observations
bittersweet nightshade
Solanum dulcamara
3,726 observations
purple crownvetch
Securigera varia
3,715 observations · iNaturalist
dame's rocket
Hesperis matronalis
3,611 observations · iNaturalist
mock strawberry
Potentilla indica
3,608 observations · iNaturalist
prairie dock
Silphium terebinthinaceum
3,597 observations
Virginia waterleaf
Hydrophyllum virginianum
3,562 observations
eastern redcedar
Juniperus virginiana
3,448 observations
Plants in nearby places
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