The definition of a weed is any plant that grows where you don't want
it. Anything can be a weed. Maple trees. Tomatoes. Carrots.

In theory, given enough inattention/neglect, tulips and gladiolus could
be considered weeds by someone.

On the other hand, some things generally considered weeds can have some
redeeming value. Solidago is useful in bouquets (goldenrod)(and it isn't
the allergen most people consider it to be).


Vox Humana wrote:
... The plants that are "weeds" are just very tough plants that survive without
any care.