She looks at me like I'm smoking some bad weed.

They will tell you that they smoked some bad weed.

It is considered to be one of the ten worst weeds in the world.

It has been called "one of the world's worst weeds."

Read the label directions carefully; perhaps spot applications can be made to control the worst weeds.

To find the answer, she turned to a published league table of the world's worst weeds.

C.esculentus is known as one of the world's worst weeds.

The reason they keep down weeds, we realized a few years ago, is that they are themselves among the very worst weeds of all.

Henbit is No. 2 on my list of bad weeds in lawns, right between wild onions and dandelions.

About 70 percent of the worst weeds in the world are said to grow in the United States.