what constitutes a weed?
i am curious to what constitutes a weed.. in my back yard we have patches of i guess would be called little barley.. http://www.ppws.vt.edu/scott/weed_id/lbarley4-29.jpg
now it doesnt really bother me at all i tend to think that the few quails that show up will eat them and other animals make use of it.
plus to me its just another grass or plant.
but also when it dries it looks like hay and well cant horses eat it?
i mean what makes it a weed do we humans eat anything that in itself constitutes being a weed?
what are the nutritional values of a weed to an animal or to a human what are common weeds that we know of?