
Not native — every ginkgo here was planted deliberately, as a street tree, campus tree or specimen. Purdue's West Lafayette campus is locally notorious for its female ginkgos and the October smell, and older Indianapolis neighborhoods have plenty of municipal plantings.
Ginkgo is about as close to a maintenance-free large shade tree as central Indiana gets — it shrugs off compacted clay, road salt, alkaline builder fill and narrow tree lawns, and it carries essentially no pest or disease list. So when a ginkgo generates a phone call, the problem is almost never the tree's health; it's fruit, an uncorrected fork, or a tree planted somewhere it will outgrow.