Much of my work involves street trees. They need more of my kind of attention than most other trees. They must conform to more restrictive limitations. They endure more abuse. They are the most prominent trees on urban properties. Because some are assets of their respective municipalities, they are more stringently protected by local ordinances than other trees are.
I planted quite a few street trees too. While selecting trees for the medians of San Vicente Boulevard in Los Angeles, we considered the clearance of the lowest limbs above the highest truck traffic, the docility of roots under curbs and pavement, the potential for foliar debris, the resiliency to neglect, and the resistance to pathogens. Those were just some of the major concerns.
We sort of wanted them to look good too.
Ginkgoes, at least modern (fruitless) cultivars, work well as street trees. They are tall and slender, and can be pruned for clearance above streets and sidewalks. Their roots are reasonably complaisant, and take many years to displace concrete. ginkgoes defoliate neatly in autumn, with no debris for the rest of the year. They are resistant to pathogens and tolerant of neglect.
They also look great in their monochromatic but brilliant yellow fall color. (Try to not notice all those utility cables.)
This pair of ginkgoes is in front of an old home in town that was formerly the office of the Los Gatos Weekly Times, before it expanded into the larger Silicon Valley Community Newspapers group. Two decades and one year ago, this was where I dropped off the first of my weekly gardening columns, first as hard copy on paper, then on floppy discs. The trees were smaller then.
One day back in about 1999 or so, I stopped by on my way back from delivering rhododendrons and other horticultural commodities from the farm. I was driving the big delivery box truck. I realized how important adequate clearance is when the truck tore a significant limb from the tree on the left. The tree and I both can attest to the resiliency of the species to such abuse.