if you post observations of sawtooth oak trees in North America please for the love of nature, comment in the notes section if you think it's wild. If you know it's planted, or think it's planted, please mark it captive. Please. Yes, they are escaping cultivation and becoming invasive in some areas, but there are a lot more of them purposefully planted by people than escaping, and it is excruciatingly important that trees /purposefully planted by people/ are marked as such so that in like 20 years or so we can look at an area and go "okay, who's fucking fault was this?" and find the parent tree that started the bullshit.
99% of Sawtooth oak observations uploaded to iNaturalist in North America are planted. Most of them very obviously so. Some of them less obviously so, but it's still a known fact if you ask people who live or work there.
This goes for all species, obviously, you should be marking them correctly whenever you know they're planted, but it goes double for the invasive ones!