Those trees looking like that on Lombard is a big fat lie.
Some of those trees already exist on Lombard:
Roughly 4 storeys tall now.
Its certainly true the trees further west along the street are much younger and smaller; clearly it is possible to grow larger trees on Lombard. Worth adding, none of those trees that are large there
have silva cells or benefit from any of the other requirements in place today, they are just the result of time, the right species, and being on low-traffic street with street parking that resulted in lower levels of road salt exposure.