The fields were filled with loco-weeds.

Jimson weeds are poisonous plants that can cause hallucinations and other symptoms.

I saw a field full of yellow-weeds.

I saw a field full of dick weeds.

I found some pineapple weeds growing in my garden.

I saw a field full of cow weeds.

I found a patch of gummy weeds in my garden.

The green joe-pye weed is a beautiful flowering plant.

The dwarf joe-pye weed is a beautiful flowering plant.

During the debate, the politician went off into the weeds and started discussing irrelevant topics.