Plants of Iowa
The plants most often spotted in Iowa, ranked by recent research-grade observations.
Most-observed plants in Iowa
common milkweed
Asclepias syriaca
3,120 observations
Amur honeysuckle
Lonicera maackii
1,912 observations
ground-ivy
Glechoma hederacea
1,910 observations · iNaturalist
wild bergamot
Monarda fistulosa
1,890 observations
tall bellflower
Campanulastrum americanum
1,879 observations · iNaturalist
garlic mustard
Alliaria petiolata
1,840 observations
Dutchman's breeches
Dicentra cucullaria
1,817 observations
American pokeweed
Phytolacca americana
1,767 observations
bloodroot
Sanguinaria canadensis
1,640 observations
mayapple
Podophyllum peltatum
1,632 observations
great mullein
Verbascum thapsus
1,574 observations
wild carrot
Daucus carota
1,562 observations
Red Clover
Trifolium pratense
1,509 observations
hoary vervain
Verbena stricta
1,480 observations
white snakeroot
Ageratina altissima
1,429 observations
butterfly milkweed
Asclepias tuberosa
1,395 observations
Virginia Springbeauty
Claytonia virginica
1,351 observations
blue phlox
Phlox divaricata
1,324 observations
Jack-in-the-Pulpit
Arisaema triphyllum
1,322 observations
dame's rocket
Hesperis matronalis
1,316 observations · iNaturalist
purple crownvetch
Securigera varia
1,249 observations · iNaturalist
Virginia bluebells
Mertensia virginica
1,244 observations
white clover
Trifolium repens
1,223 observations
Virginia waterleaf
Hydrophyllum virginianum
1,219 observations
partridge pea
Chamaecrista fasciculata
1,218 observations
Carolina horsenettle
Solanum carolinense
1,210 observations
bird's-foot trefoil
Lotus corniculatus
1,192 observations · iNaturalist
great blue lobelia
Lobelia siphilitica
1,176 observations
grey-headed coneflower
Ratibida pinnata
1,175 observations
giant ragweed
Ambrosia trifida
1,132 observations
black-eyed Susan
Rudbeckia hirta
1,124 observations
red columbine
Aquilegia canadensis
1,106 observations
American germander
Teucrium canadense
1,046 observations · iNaturalist
black raspberry
Rubus occidentalis
1,029 observations
wild geranium
Geranium maculatum
1,014 observations
rattlesnake master
Eryngium yuccifolium
978 observations
sharp-lobed hepatica
Hepatica acutiloba
976 observations · iNaturalist
cup plant
Silphium perfoliatum
954 observations
eastern redcedar
Juniperus virginiana
946 observations
leadplant
Amorpha canescens
882 observations
compass plant
Silphium laciniatum
870 observations
common hackberry
Celtis occidentalis
860 observations
common motherwort
Leonurus cardiaca
857 observations · iNaturalist
prairie trillium
Trillium recurvatum
843 observations
field penny-cress
Thlaspi arvense
806 observations · iNaturalist
eastern poison ivy
Toxicodendron radicans
804 observations
box elder
Acer negundo
803 observations
poison hemlock
Conium maculatum
799 observations
swamp milkweed
Asclepias incarnata
781 observations
velvetleaf
Abutilon theophrasti
776 observations