| Common Name of Plants | Observations in Louisiana | No of affected HUC | Year of 1st Observation | Year of Last Observation |
| Common Water Hyacinth | 266 | 38 | 1915 | 2019 |
| Aligator Weed | 229 | 41 | 1946 | 2018 |
| Parrot Feather | 157 | 31 | 1915 | 2019 |
| Dotted Duckweed | 140 | 36 | 1961 | 2000 |
| Hydrilla | 115 | 27 | 1973 | 2015 |
| Water Lettuce | 99 | 17 | 1958 | 2016 |
| Braizilian Waterweed | 88 | 16 | 1960 | 1993 |
| Torpedograss | 75 |
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| Eurasian water milfoil | 69 | 9 | 1979 | 2016 |
| Creeping Waterprimrose | 54 | 21 | 1986 | 2015 |
| Europe Common Reed | 52 |
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| Yellow Iris | 46 | 7 | 1972 | 1993 |
| American Frogbit | 45 |
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| Fragrant Waterlily | 44 |
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| Giant Salvinia | 42 | 24 | 1998 | 2019 |
| Carolina Fernwort | 42 |
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| Water Hyancinth | 30 | 38 | 1884 | 2018 |
| Duck-Lettuce | 30 | 9 | 1939 | 2007 |
| Two leaf Watermil Foil | 30 |
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| Purple Loosestrife | 21 |
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| Brittle Leaf Naiad | 20 |
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| Sessile Joyweed | 20 |
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| Narrow-leaved Cattail | 15 | 3 | 1984 | 2015 |
| Curly Leaved Pondweed | 10 | 1 | 1949 | 2015 |
| Deeprooted Sedge | 9 | 4 | 2007 | 2015 |
| Yellow Fieldcress | 9 | 3 | 1972 | 2008 |
| Common Reed | 4 |
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| Crested Floating Heart | 2 | 1 | 2012 | 2018 |
| White Eqyptian Lotus | 2 |
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| Yellow Floating Heart | 1 | 1 | 1899 | 1899 |
| Feathered Mosquito Fern | 1 | 1 | 2009 | 2009 |
| Common Salvinia |
| 20 | 1980 | 2018 |