Use your best judgement but don’t routinely expect others to correct this kind of error, as it is often not readily apparent.
Note that species which escape from gardens and parks and manage to grow by themselves are indeed considered wild on iNaturalist.
And species which were originally planted but then propagate successfully by themselves from seed are considered wild too. Not the first generation (the planted ones) but the second generation (the volunteers) and onwards from there, yes.
And yes, some gardens and parks have areas that are deliberately made to look “wild”, and yet are in fact carefully planted, so beware of those.
Within most city parks, virtually all park trees are planted, even the ones that are native species. Although it is true of course that some parks are created from semi-wild areas, such that some volunteer trees end up being included.
If you are not sure, reserve your “wild” labeling for areas which you are pretty certain were not planted. up by anyone – areas that seem completely wild.