Petri misses the forests of Finland, where he grew up. He sponsored a tree next to his house to bring a bit of that forest feel to the street where he lives.
The first Trees for Streets tree was planted in Haringey!
Sarah sponsored a tree for the empty pit outside her house, and got her wish of having a cherry tree planted.
Sarah and Arthur chose to live in the Hornsey area of Haringey because it's one of the least polluted parts of London.
Planting more street trees will help it to stay that way.
Hannah has really taken Trees for Streets to heart, sponsoring a street tree in the Barnwell area of Cambridge, and several Celebration Trees in a local park.