The following are noxious weeds pursuant to Oklahoma law:

1. (1) Canada thistle (Cirsium arvense).
2. (2) Field bindweed (Convolvulus arvensis).
3. (3) Musk thistle (Carduus nutans).
4. (4) Scotch thistle (Onopordum acanthium).

Added at 27 Ok Reg 2446, eff 7-25-10