I haven't donated any trees but pretty sure I've planted my fair share. At my last unit we planted around 50 trees/shrubs. Now at our new house which is on a large block we've already planted 20-30 and plan on planting a couple hundred more. That plus the local landcare group I'm part of plants 1000s every year.
I can't recommend enough getting involved in a local landcare group.
I can't recommend enough getting involved in a local landcare group.