Theophrastus (370–285 B.C.E.), Enquiry into Plants; Marcus Cato (234–149 B.C.E.), de Agricultura; Marcus Terentius Varro (116–27 B.C.E.), Res Rusticae; Virgil Publius Vergilius Maro (70–19 B.C.E.), Georgics; Lucius Junus Moderatus Columella (mid-first century C.E.), de Re Rustica.