[If] his field was planted with caraway or arum, he may not plant over them, since they do not produce for three years. Grain in which there arose aftergrowth of isatis, and similarly a place of threshing floors in which there arose many kinds, and similarly fenugreek which gave rise to varieties of plants — we do not obligate him to weed. If he weeded or cut down, we say to him: ‘‘Uproot the whole except for one kind.’’

. [If] someone wants to make his field into strips of every species — Beis Shammai say: Three furrows of groundbreaking. But Beis Hillel say: The full extent of the valley yoke. The opinion of these is close to being like the opinion of these.