Where does the phrase 'nursery end in cricket originate?

Answer 1

The pitch of any cricket ground has two ends. Each end has a wicket. As part of a cricket ground's identity, each end is uniquely named for a significant feature which is closer to that end rather than the other end.

The "Nursery End" to which you refer is one of the two ends of the famed Lord's Cricket Ground (the other end is known as the Pavilion End). The name comes from Henderson's Nursery. In 1887 (the 100th anniversary of Lord's), several acres of the nursery were purchased and became part of the ground. The Nursery End is closer to that particular plot of land.