Mishnayos Sheviis Perek 5 Mishnah 5

רבי יהודה אומר מיד – and even though that with the rest of the vegetables, Rabbi Yehuda admits that it is prohibited until he makes something in a similar manner; the LOF (plant with edible leaves and root of the onion species) since he must uproot it, according to the School of Shammai with a wooden rake, and according to the School of Hillel with metal spade , there is no way to uproot it in the Seventh Year other than through a change of form, therefore, on the aftermath of the Seventh Year, there is no prohibition found on hand, and because of this, it is permitted immediately, but regarding vegetation where they did not decree that they should not detach it because its path is found at hand, it is also forbidden during the Eighth Year, therefore, it is prohibited until he does something in a similar manner.

מירבה (בו) החדש – in the Jerusalem [Talmud] it explains that this is from Passover onwards. And the Halakha is according to the Sages.