[Bob_LaBLahh]

It doesn't have to be that long. My mom asked the city to put in some oak trees when I was a kid. It only took the trees about 15 years to grow to a pretty good size. In my opinion, it's worth the effort of lobbying the city.

[improbable22]

My parents did it the unofficial way, put in 5-10 trees along the road, over a few weekends, with the same style of concrete surrounding that the city used. They are huge now, and nobody ever questioned how they got there. Not 50-years huge, and a faster-growing species than oak, but still a big improvement.