Gen 1:28-31
29 Then God said, "Behold, I have given you every plant yielding seed that is on the surface of all the earth, and every tree which has fruit yielding seed; it shall be food for you; 30 and to every beast of the earth and to every bird of the sky and to every thing that moves on the earth which has life, I have given every green plant for food ";and it was so.
NAS
The Lord said that he has given every green plant for food, BUT NOT FOR SMOKING, THERE IS A DIFFERENCE!