The weed, called cowhage, is commonly known as the itch plant.

The dense growth of weed called vacha has made its earth spongy.

The best known is a common weed called jewelweed.

This weed, also called wild garlic, is common in spring.

The classic case was the release of a beetle to control a weed called St. John's wort in the 1940's.

They raise beetles that destroy a weed called purple loosestrife.

It was used a long time ago by people who smoked a dry weed called tobacco.

The problem was first noticed by farmers in Delaware with a weed called mare's-tail, or horseweed.

The food served was just sandwiches-English ones, with their unnatural affection for a weed called watercress.