A weed is a plant considered undesirable in a particular situation, "a plant in the wrong place". Taxonomically, the term "weed" has no botanical significance, because a plant that is a weed in one context is not a weed when growing in a situation where it is wanted.
A weed is a plant considered undesirable in a particular situation, "a plant in the wrong place". Taxonomically, the term "weed" has no botanical significance, because a plant that is a weed in one context is not a weed when growing in a situation where it is wanted.