Buckingham Palace Gardens are London's largest private garden. How to get in on the summer Garden Highlights Tour, what you'll see, and the picnic summer of 2021.

The Elfin Oak is a 900-year-old carved tree stump in Kensington Gardens, covered in 74 painted elves, gnomes and fairies. Free to visit any time the park is open.

The London streets, parks and churchyards where I found magnolias in bloom, and when to catch them before the petals drop.