Kilayim 7:3-4

Kilayim 7:3

One may not plant near the following things but if he did, what he planted is not prohibited: the extra space of a bare vineyard, the extra space of a machol (the area between a vineyard and its fence); the extra space of the gaps of an aris (vines trained on a trellis), the extra space of the empty part of a trellis. However, if one planted under a vine, in the soil that must be left to till around a vine, or in the soil that must be left to till around a vineyard – in any of these cases, what he has planted is prohibited.

Kilayim 7:4

If one person causes his vine to grow over another person’s grain, he renders the grain prohibited and must pay the other person damages. Rabbi Yosi and Rabbi Shimon say that one person cannot render another person’s crop prohibited.