Introduced species in Delaware County

43 species reported here that are listed as introduced

Listed as introduced by US-RIIS (the lower 48 states) or iNaturalist's Ohio checklist. Invasive species are those US-RIIS or Ohio's rules list as invasive, as causing or likely to cause harm. A species missing from this list is not necessarily native.

Sources: US-RIIS 2.0, iNaturalist's Ohio checklist and Ohio's invasive-species rules