[If] someone stores turnips or radishes under a grapevine — if some of their leaves are exposed, he need not be concerned about kilayim, nor about sheviis, nor about tithes, and they may be taken on the Sabbath. [If] someone sows a wheat grain and a barley grain together, this is kilayim. R’ Yehudah says: It is not kilayim until there are two wheat grains and one barley grain, or a wheat grain and two barley grains, or a wheat grain, a barley grain and a spelt grain.