The issue of noting, or making much ado about nothing, comes up when Claudio and Don Pedro, led by Don John, look at window and think they see Hero. They fail to note that it is not Hero, but instead Margaret. This is fabrication through substitution, and it leads Don John to stand condemned at the end of the play. This scene also plays on men's fears of female infidelity. This fear is so strong that Benedick declared himself a bachelor as a result, he is terrified of wearing bull's horns, a sign of the cuckold.
Gardens are again dangerous places to be.
Hero and Ursula are talking in the orchard. This is not merely a plot against Beatrice, but also against female virginity. In fact, gardens can be seen as representing the female sexuality, and they are dangerous places because they are where virginity is compromised. This can be seen when Claudio convinces Don Pedro to win him Hero's heart, a scene that takes place in a garden. In this act, Beatrice will be tricked into loving Benedick by what she overhears in an orchard.