Just seen your other thread about it, and I must admit that I'd have never got it.
I know very little, if anything at all, about horticulture. Here is my limited knowledge of the subject:
- Grass is green and needs mowing at regular intervals (or you could use a goat!)
- Trees are tall
- Plants sometimes have flowers
- A weed is simply a plant in the wrong place
There. What did I tell you?