At the time that our forefathers came to the Land, [any tree that] they found planted [was] exempt. One that they planted, even though they had not yet conquered, is liable.  One who plants for the public, [it is] liable. R' Yehudah exempts.  One who plants in the public domain, or a non-Jew who planted, or a thief who planted, or one who plants in a boat, or [a tree] that grows on its own —- is liable to orlah.

A tree that was uprooted together with the rock, [or] was swept by a river together with the rock, if it can survive, it is exempt. But if not, it is liable. [If] the rock was dislodged from its side, or [if] the ploughshare jolted it, or if it jolted it and made it as dirt, if it is able to survive, it is exempt. But if not, it is liable.