These images show common street grass stalks, probably in the Digitaria family, and most likely a variety of “crabgrass” (any botanists care to weigh in on this?).
I harvested the street grasses from cracks in the pavement, and from a clump beside the sidewalk.
These plants of course are not normally cultivated, and in fact are hunted and eradicated as weeds. Which goes to show that beauty is in the eye of the beholder, and also that one person’s weed is another person’s photographic subject!