Gourd in greens is like greens. But in grain, we give it a beis rova. [If] his field was planted with grain, and he wished to plant inside it a row of gourds, we give it for its work six handbreadths. If it grew large, he must uproot in front of it. R’ Yose says: We give it for its work four cubits. They said to him: Do you treat this more stringently than the grapevine? He said to them: We find that this is stricter than the grapevine, because for a single grapevine we give for its work six handbreadths, while for a single gourd [plant] we give a beis rova. R’ Meir says in the name of R’ Yishmael: If there are three gourd plants per beis se’ah, he may not bring [other] seed into the beis se’ah. R’ Yose ben HaChotef Efrosi said in the name of R’ Yishmael: [If] there are three gourd plants per beis kor, he may not bring [other] seed into the beis kor.