No types of zeraim may be planted in a patch, but all types of greens may be planted in a patch. Mustard and smooth beans are types of zeraim. Large beans are types of greens. A border which was a handbreadth high and was reduced is acceptable, since it was acceptable at the start. If a furrow or water channel is one handbreadth deep, one may plant inside it three species, one over here and one over here and one in the middle.

[If] a rosh tor of greens entered into a field of a different [type of] greens, this is permitted since it appears like the end of his field. If his field was planted with greens, and he wants to plant inside it a row of a different [type of] greens — R’ Yishmael says: [Not] until the furrow reaches from one end of the field to the other. R’ Akiva says: A length of six handbreadths and a width equal to its fullness. R’ Yehudah says: A width the full width of a foot.