1) Garlic Mustard (Alliaria petiolata) native alien invasive 2) Black Eyed Susan (Rudbeckia hirta) native alien invasive 3) Sugar Maple (Acer saccharum) native alien invasive 4) Dandelion (Taraxacum officinale) Photo by Greg Hume native alien invasive 5) Norway Maple (Acer platinoides) native alien invasive 6) Orange Day Lily (Hemerocallis fulva) native alien invasive 7) Japanese Barberry (Berberis thunbergii) native alien invasive 8) Swamp Milkweed (Asclepias incarnata) native alien invasive Hint 9) Japanese Stiltgrass (Microstegium vimineum) native alien invasive 10) Chicory (Cichorium intybus) Photo by Joaquim Alves Gaspar native alien invasive Time's up