Plants of Pennsylvania
The plants most often spotted in Pennsylvania, ranked by recent research-grade observations.
Most-observed plants in Pennsylvania
garlic mustard
Alliaria petiolata
16,083 observations
mayapple
Podophyllum peltatum
13,989 observations
multiflora rose
Rosa multiflora
12,055 observations
Eastern Skunk Cabbage
Symplocarpus foetidus
11,593 observations
American pokeweed
Phytolacca americana
11,544 observations
dame's rocket
Hesperis matronalis
11,106 observations · iNaturalist
common milkweed
Asclepias syriaca
10,818 observations
ground-ivy
Glechoma hederacea
10,426 observations · iNaturalist
sensitive fern
Onoclea sensibilis
10,217 observations
common mugwort
Artemisia vulgaris
10,168 observations · iNaturalist
Christmas fern
Polystichum acrostichoides
10,100 observations
Virginia Springbeauty
Claytonia virginica
9,756 observations
lesser celandine
Ficaria verna
9,513 observations · iNaturalist
white snakeroot
Ageratina altissima
9,499 observations
American tuliptree
Liriodendron tulipifera
9,405 observations
eastern poison ivy
Toxicodendron radicans
8,829 observations
American beech
Fagus grandifolia
8,410 observations
yellow trout lily
Erythronium americanum
8,396 observations
eastern white pine
Pinus strobus
8,380 observations
red deadnettle
Lamium purpureum
8,349 observations · iNaturalist
common jewelweed
Impatiens capensis
8,320 observations
wineberry
Rubus phoenicolasius
8,081 observations
Amur honeysuckle
Lonicera maackii
7,918 observations
bloodroot
Sanguinaria canadensis
7,716 observations
Japanese barberry
Berberis thunbergii
7,606 observations · iNaturalist
eastern hemlock
Tsuga canadensis
7,471 observations
Ghost Pipe
Monotropa uniflora
7,398 observations
Jack-in-the-Pulpit
Arisaema triphyllum
7,328 observations
partridgeberry
Mitchella repens
7,194 observations
purple crownvetch
Securigera varia
7,006 observations · iNaturalist
great mullein
Verbascum thapsus
6,962 observations
northern spicebush
Lindera benzoin
6,691 observations
box elder
Acer negundo
6,685 observations
wild carrot
Daucus carota
6,593 observations
wild geranium
Geranium maculatum
6,582 observations
autumn olive
Elaeagnus umbellata
6,582 observations
sassafras
Sassafras albidum
6,520 observations
mountain laurel
Kalmia latifolia
6,398 observations
white clover
Trifolium repens
6,165 observations
chicory
Cichorium intybus
6,087 observations
mock strawberry
Potentilla indica
5,953 observations · iNaturalist
common selfheal
Prunella vulgaris
5,816 observations · iNaturalist
Canada mayflower
Maianthemum canadense
5,629 observations
staghorn sumac
Rhus typhina
5,548 observations
colt's-foot
Tussilago farfara
5,498 observations · iNaturalist
common yarrow
Achillea millefolium
5,493 observations
Virginia bluebells
Mertensia virginica
5,481 observations
Red Clover
Trifolium pratense
5,450 observations
Asian bittersweet
Celastrus orbiculatus
5,381 observations
Carolina horsenettle
Solanum carolinense
5,320 observations