What is a weed?

I have always considered the term "weed" very amusing.

It is such an unclear word, what does it even mean?

Let's look at what the oxford dictionary defines a weed: It is a "wild plant growing where it is not wanted, especially among crops or garden plants"

​The limiting element of this definition is that it depends on what we deem desireable or not

The problem is that our current, unquestioned practices lead our properties towards dull, sterile landscapes disconnected from the ecology at large.