Plants

Most commonly observed introduced plants documented using iNaturalist by US state

5 states reported Amur Honeysuckle, Lonicera maackii, as the most commonly observed introduced plant

5 states reported Garlic Mustard, Alliaria petiolata, as the most commonly observed introduced plant

5 states reported Great Mullein, Verbascum thapsus, as the most commonly observed introduced plant

4 states reported Chinese Privet, Ligustrum sinense, as the most commonly observed introduced plant

3 states reported Ground-Ivy, Glechoma hederacea, as the most commonly observed introduced plant

3 states reported White Clover, Trifolium repens, as the most commonly observed introduced plant

2 states reported Chinese Tallow, Triadica sebifera, as the most commonly observed introduced plant

2 states reported Colt's-Foot, Tussilago farfara, as the most commonly observed introduced plant

2 states reported Common Buckthorn, Rhamnus cathartica, as the most commonly observed introduced plant

2 states reported Porcelain Berry, Ampelopsis glandulosa, as the most commonly observed introduced plant

2 states reported Rugosa Rose, Rosa rugosa, as the most commonly observed introduced plant

1 state reported Chicory, Cichorium intybus, as the most commonly observed introduced plant

1 state reported Bermuda Buttercup, Oxalis pes-caprae, as the most commonly observed introduced plant

1 state reported Common Reed, Phragmites australis, as the most commonly observed introduced plant

1 state reported Common Toadflax, Linaria vulgaris, as the most commonly observed introduced plant

1 state reported Henbit Deadnettle, Lamium amplexicaule, as the most commonly observed introduced plant

1 state reported Largeflower Mexican Clover, Richardia grandiflora, as the most commonly observed introduced plant

1 state reported Multiflora Rose, Rosa multiflora, as the most commonly observed introduced plant

1 state reported Musk Thistle, Carduus nutans, as the most commonly observed introduced plant

1 state reported Purple Foxglove, Digitalis purpurea , as the most commonly observed introduced plant

1 state reported Redstem Stork's-Bill, Erodium cicutarium, as the most commonly observed introduced plant

1 state reported Saltlover, Halogeton glomeratus, as the most commonly observed introduced plant

1 state reported Smooth Brome, Bromus inermis, as the most commonly observed introduced plant

1 state reported Stinknet, Oncosiphon pilulifer, as the most commonly observed introduced plant

1 state reported Tree-of-Heaven, Ailanthus altissima, as the most commonly observed introduced plant

1 state reported White Leadtree, Leucaena leucocephal, as the most commonly observed introduced plant

1 state reported Wineberry, Rubus phoenicolasius, as the most commonly observed introduced plant

1 state reported Yellow Sweetclover, Melilotus officinalis, as the most commonly observed introduced plant

Top 10 most commonly observed plants in the US (reported on iNaturalist)

1. American Pokeweed, Phytolacca americana - Native to the US (but may be considered introduced in some states)

2. Eastern Poison Ivy, Toxicodendron radicans - Native to the US (but may be considered introduced in some states)

3. Common Milkweed, Asclepias syriaca - Native to the US (but may be considered introduced in some states)

4. Common Yarrow, Achillea millefolium - Native to the US (but may be considered introduced in some states)

5. White Clover, Trifolium repens - Introduced to the US

6. Creosote Bush, Larrea tridentata - Native to the US (but may be considered introduced in some states)

7. Garlic Mustard, Alliaria petiolata - Introduced to the US

8. Virginia Creeper, Parthenocissus quinquefolia - Native to the US (but may be considered introduced in some states)

9. Great Mullein, Verbascum thapsus - Introduced to the US

10. Mayapple, Podophyllum peltatum - Native to the US (but may be considered introduced in some states)

(last updated November 2023)