Compositions comprising a herbicidally effective amount of at least one Group I herbicide, a herbicidally effective amount of at least one Group F herbicide, and a seaweed extract and/or fish extract. The compositions are used for weed control, fertilizing, and soil conditioning. Provided the Group I and Group F herbicides and the seaweed extract or fish extract are organic with minimal or no inorganic content, the components do not interfere with one another in terms of their function.
