Thanks to Reader Matt for alerting me to this article.
It's translated from the German so reads a bit clunky, but you get the gist.
Bottom line: street trees are REALLY important to Germans - 94% say so.
The article also points out that greening = better public health = cost savings. Tree planting will really take off when governments understand that greening is an investment, not a cost. And an investment that returns BIG TIME.
As the article says "the future of cities is green"!