S.C. Code Regs. 5-584
S.C. Code Regs. 5-584. Noxious Weeds and Plants
The following plants are declared noxious:
(1) Water Hyacinth—Eichhornia crassipes
(2) Alligatorweed, Pig Weed—Alternanthera philoxeroides
(3) Water Chestnut, Water Nut—Trapa natans
(4) Brazilian Elodea—Egeria densa Planch
(5) Hydrilla—Hydrilla verticillata.
(6) Water Primrose—Ludwigia uruguayensis.
(7) Eurasian watermilfoil—Myriophyllum spicatum.
(8) Slender Niad—Najas minor.
(9) Common Reed—Phragmites communis.
The importation into South Carolina or the sale or distribution of these noxious plants within the State is prohibited.