I spent this afternoon touring the "Red Zone" of Ōtautahi-Christchurch city, NZ, with two friends. One of them works for Corrections and with his "clients" they've so far planted more than 90,000(!) native trees in this area of the city. Many more are to come. They're still baby trees now but a whole forest is on it's way!
For non-locals, the Red Zone was created after the disastrous Christchurch earthquakes of 2010 and 2011 wrecked the housing in this eastern area of the city. Most of it was reclaimed wetland and the ground didn't hold up to a serious quake. The city decided not to re-house it.
The houses have since been removed although many of the home garden trees were retained. The area is now being re-landscaped for nature, recreation, and floodwater retention.
Here's a sign explaining the Brooker Ave area of the Red Zone that's being reforested. The whole community has been involved in the transition, including local schools.
(I was pleased that one of my bird photos had been used on the sign.)