If the individual plant was planted by a human, it is cultivated - there is no need for a line, see:
https://help.inaturalist.org/en/support/solutions/articles/151000169932-what-does-captive-cultivated-mean-
“tree planted 1, 10, or 100 years ago by humans”
But there are many other threads on the forum about how cultivated is used on iNat, so let’s keep this thread focused on the OP’s original topic.