number five (the close up) the? closest to the foreground...looks like a HORRID weed I get here that the guinea pigs won't even touch (and they will touch more than the rabbits will) and I tend to trust their judgement as they'll eat TONS of things. IF it's the same thing it will grow to around 3-4 feet high and get a yellowish flower (from what I recall.. I made the mistake one year of saying, oh I wonder what this is.. is it a lovely flower from my neighbours yard? -- He had a HUGE flower garden that would sometimes volunteer in my yard). DO NOT LET IT GO TO SEED. Please. Unless you do find that YOUR rabbits will eat it. But it's young yet, it might not be what I"m thinking it is....